List of mammals of Costa Rica facts for kids
Costa Rica is home to many amazing mammals! This article will tell you about the different types of mammals found here, from tiny bats to huge whales. You'll also learn about their conservation status, which tells us if they are safe or if they need our help to survive.
Some mammals in Costa Rica are in danger. One species is critically endangered, which means it's very close to disappearing forever. Four species are endangered, and six are vulnerable. Three species are "near threatened," meaning they might be in danger soon. Sadly, one mammal species is already extinct, meaning it's gone forever.
To understand how safe each species is, we use special tags from the International Union for Conservation of Nature (IUCN). Here's what they mean:
EX | Extinct | This means the last animal of its kind has died. It's gone forever. |
EW | Extinct in the wild | These animals only live in zoos or special protected areas, not in their natural homes. |
CR | Critically endangered | These animals are in extreme danger of disappearing from the wild very soon. |
EN | Endangered | These animals face a very high risk of disappearing from the wild. |
VU | Vulnerable | These animals face a high risk of disappearing from the wild in the future. |
NT | Near threatened | These animals are not in immediate danger, but they might be in the future. |
LC | Least concern | These animals are common and not currently at risk. |
DD | Data deficient | We don't have enough information to know if these animals are at risk. |
Contents
- Mammals with Pouches: Opossums (Didelphimorphia)
- Gentle Giants of the Water: Manatees (Sirenia)
- Armored Animals: Armadillos (Cingulata)
- Slow and Steady, or Busy Eaters: Sloths and Anteaters (Pilosa)
- Smart and Social: Primates (Monkeys)
- Gnawing Wonders: Rodents (Rodentia)
- Hoppers and Nibblers: Lagomorphs (Rabbits and Hares)
- Small Insect Eaters: Eulipotyphla (Shrews)
- Masters of the Night Sky: Bats (Chiroptera)
- Ocean Dwellers: Whales and Dolphins (Cetacea)
- Meat Eaters: Carnivores (Carnivora)
- Odd-Toed Hoofed Mammals: Tapirs (Perissodactyla)
- Even-Toed Hoofed Mammals: Peccaries and Deer (Artiodactyla)
- See also
Mammals with Pouches: Opossums (Didelphimorphia)
Opossums are unique mammals found in the Americas. They are marsupials, which means many of them carry their babies in a pouch, like kangaroos! They are usually small to medium-sized, similar to a large house cat. Opossums have long snouts and tails that can grip things, helping them climb.
- Family: Didelphidae (American opossums)
- Genus: Caluromys
- Derby's woolly opossum, Caluromys derbianus VU
- Genus: Chironectes
- Water opossum, Chironectes minimus LR/nt
- Genus: Didelphis
- Common opossum, Didelphis marsupialis LR/lc
- Virginia opossum, Didelphis virginiana LR/lc
- Genus: Marmosa
- Alston's mouse opossum, Marmosa alstoni LR/nt
- Mexican mouse opossum, Marmosa mexicana LR/lc
- Genus: Metachirus
- Brown four-eyed opossum, Metachirus nudicaudatus LR/lc
- Genus: Philander
- Gray four-eyed opossum, Philander opossum LR/lc
- Genus: Caluromys
Gentle Giants of the Water: Manatees (Sirenia)
Manatees are amazing mammals that live completely in the water. They are plant-eaters and can be found in rivers, coastal waters, and swamps. All four species of manatees around the world are endangered, including the one found in Costa Rica.
- Family: Trichechidae
- Genus: Trichechus
- West Indian manatee, Trichechus manatus VU
- Genus: Trichechus
Armored Animals: Armadillos (Cingulata)
Armadillos are small mammals known for their hard, bony shells. This shell acts like armor, protecting them from danger. They live in the Americas, and there are about 20 different kinds of armadillos.
- Family: Dasypodidae (armadillos)
- Genus: Dasypus
- Nine-banded armadillo, Dasypus novemcinctus LC
- Genus: Cabassous
- Northern naked-tailed armadillo, Cabassous centralis DD
- Genus: Dasypus
Slow and Steady, or Busy Eaters: Sloths and Anteaters (Pilosa)
The Pilosa group includes sloths, anteaters, and tamanduas. These animals are only found in the Americas. Sloths are famous for being very slow, while anteaters are known for their long tongues that help them eat insects.
- Suborder: Folivora (Sloths)
- Family: Bradypodidae (three-toed sloths)
- Genus: Bradypus
- Brown-throated three-toed sloth, Bradypus variegatus LC
- Genus: Bradypus
- Family: Choloepodidae (two-toed sloths)
- Genus: Choloepus
- Hoffmann's two-toed sloth, Choloepus hoffmanni LC
- Genus: Choloepus
- Family: Bradypodidae (three-toed sloths)
- Suborder: Vermilingua (Anteaters)
- Family: Cyclopedidae
- Genus: Cyclopes
- Silky anteater, C. didactylus LC
- Central American silky anteater, C. dorsalis
- Genus: Cyclopes
- Family: Myrmecophagidae (American anteaters)
- Genus: Myrmecophaga
- Giant anteater, Myrmecophaga tridactyla VU
- Genus: Tamandua
- Northern tamandua, Tamandua mexicana LC
- Genus: Myrmecophaga
- Family: Cyclopedidae
Smart and Social: Primates (Monkeys)
Primates include humans and their close relatives like monkeys and apes. Costa Rica is home to four different kinds of monkeys. They are known for their intelligence and social behaviors.
- Family: Cebidae (Capuchin and Squirrel Monkeys)
- Genus: Cebus
- Panamanian white-faced capuchin, Cebus imitator LC
- Genus: Saimiri
- Central American squirrel monkey, Saimiri oerstedii VU
- Genus: Cebus
- Family: Atelidae (Howler and Spider Monkeys)
- Genus: Alouatta
- Mantled howler, Alouatta palliata LC
- Genus: Ateles
- Geoffroy's spider monkey, Ateles geoffroyi EN
- Genus: Alouatta
Gnawing Wonders: Rodents (Rodentia)
Rodents are the largest group of mammals, making up over 40% of all mammal species! In Costa Rica, there are fewer than 50 types of rodents. They all have two front teeth in their upper and lower jaws that never stop growing. They have to keep gnawing on things to keep these teeth short. Most rodents are small, but the capybara can weigh up to 45 kg!
- Family: Erethizontidae (New World porcupines)
- Genus: Coendou
- Mexican hairy dwarf porcupine, Coendou mexicanus LR/lc
- Genus: Coendou
- Family: Dasyproctidae (agoutis and pacas)
- Genus: Dasyprocta
- Central American agouti, Dasyprocta punctata LR/lc
- Genus: Dasyprocta
- Family: Cuniculidae
- Genus: Cuniculus
- Lowland paca, Cuniculus paca LC
- Genus: Cuniculus
- Family: Echimyidae
- Genus: Hoplomys
- Armored rat, Hoplomys gymnurus LR/lc
- Genus: Proechimys
- Tome's spiny-rat, Proechimys semispinosus LR/lc
- Genus: Hoplomys
- Family: Sciuridae (squirrels)
- Genus: Microsciurus
- Central American dwarf squirrel, Microsciurus alfari LR/lc
- Genus: Sciurus
- Deppe's squirrel, Sciurus deppei LR/lc
- Red-tailed squirrel, Sciurus granatensis LR/lc
- Variegated squirrel, Sciurus variegatoides LR/lc
- Genus: Syntheosciurus
- Bangs's mountain squirrel, Syntheosciurus brochus LR/nt
- Genus: Microsciurus
- Family: Geomyidae (Pocket Gophers)
- Genus: Orthogeomys
- Chiriqui pocket gopher, Orthogeomys cavator LR/lc
- Cherrie's pocket gopher, Orthogeomys cherriei LR/nt
- Variable pocket gopher, Orthogeomys heterodus LR/nt
- Underwood's pocket gopher, Orthogeomys underwoodi LR/lc
- Genus: Orthogeomys
- Family: Heteromyidae (Pocket Mice)
- Genus: Heteromys
- Desmarest's spiny pocket mouse, Heteromys desmarestianus LR/lc
- Mountain spiny pocket mouse, Heteromys oresterus LR/nt
- Salvin's spiny pocket mouse, Heteromys salvini LR/lc
- Genus: Heteromys
- Family: Cricetidae (New World Rats and Mice)
- Genus: Nyctomys
- Sumichrast's vesper rat, Nyctomys sumichrasti LR/lc
- Genus: Ototylomys
- Big-eared climbing rat, Ototylomys phyllotis LR/lc
- Genus: Tylomys
- Watson's climbing rat, Tylomys watsoni LR/lc
- Genus: Peromyscus
- Mexican deer mouse, Peromyscus mexicanus LR/lc
- Genus: Reithrodontomys
- Short-nosed harvest mouse, Reithrodontomys brevirostris LR/lc
- Chiriqui harvest mouse, Reithrodontomys creper LR/lc
- Slender harvest mouse, Reithrodontomys gracilis LR/lc
- Mexican harvest mouse, Reithrodontomys mexicanus LR/lc
- Nicaraguan harvest mouse, Reithrodontomys paradoxus LR/nt
- Rodriguez's harvest mouse, Reithrodontomys rodriguezi VU
- Sumichrast's harvest mouse, Reithrodontomys sumichrasti LR/lc
- Genus: Scotinomys
- Alston's brown mouse, Scotinomys teguina LR/lc
- Chiriqui brown mouse, Scotinomys xerampelinus LR/lc
- Genus: Melanomys
- Dusky rice rat, Melanomys caliginosus LR/lc
- Genus: Oecomys
- Trinidad arboreal rice rat, Oecomys trinitatis LR/lc
- Genus: Oligoryzomys
- Fulvous pygmy rice rat, Oligoryzomys fulvescens LR/lc
- Genus: Oryzomys
- Tomes's rice rat, Oryzomys albigularis LR/lc
- Alfaro's rice rat, Oryzomys alfaroi LR/lc
- Bolivar rice rat, Oryzomys bolivaris LR/lc
- Coues' rice rat, Oryzomys couesi LR/lc
- Boquete rice rat, Oryzomys devius LR/lc
- Talamancan rice rat, Oryzomys talamancae LR/lc
- Genus: Rheomys
- Goldman's water mouse, Rheomys raptor LR/lc
- Underwood's water mouse, Rheomys underwoodi LR/lc
- Genus: Sigmodon
- Southern cotton rat, Sigmodon hirsutus LC
- Genus: Sigmodontomys
- Alfaro's rice water rat, Sigmodontomys alfari LR/lc
- Harris's rice water rat, Sigmodontomys aphrastus CR
- Genus: Zygodontomys
- Short-tailed cane rat, Zygodontomys brevicauda LR/lc
- Genus: Nyctomys
Hoppers and Nibblers: Lagomorphs (Rabbits and Hares)
Lagomorphs include rabbits and hares. They might look like rodents, but they are actually a separate group of mammals. One key difference is that lagomorphs have four front teeth in their upper jaw, while rodents only have two.
- Family: Leporidae (rabbits, hares)
- Genus: Sylvilagus
- Dice's cottontail, Sylvilagus dicei VU
- Eastern cottontail, Sylvilagus floridanus LR/lc
- Central American tapeti, Sylvilagus gabbi LC
- Genus: Sylvilagus
Small Insect Eaters: Eulipotyphla (Shrews)
Eulipotyphlans are mammals that mostly eat insects. Shrews look a lot like mice, but they are not rodents. Moles are also in this group, known for their strong bodies that help them dig underground.
- Family: Soricidae (shrews)
- Genus: Cryptotis
- Talamancan small-eared shrew, Cryptotis gracilis VU
- Blackish small-eared shrew, Cryptotis nigrescens LR/lc
- Genus: Cryptotis
Masters of the Night Sky: Bats (Chiroptera)
Bats are truly special because they are the only mammals that can fly! Their front limbs are actually wings. Bats make up about 20% of all mammal species in the world. In Costa Rica, there are 109 different kinds of bats, which is half of all the country's mammal species!
- Family: Noctilionidae (Bulldog Bats)
- Genus: Noctilio
- Lesser bulldog bat, Noctilio albiventris LR/lc
- Greater bulldog bat, Noctilio leporinus LR/lc
- Genus: Noctilio
- Family: Vespertilionidae (Common Bats)
- Genus: Myotis
- Silver-tipped myotis, Myotis albescens LR/lc
- Elegant myotis, Myotis elegans LR/nt
- Hairy-legged myotis, Myotis keaysi LR/lc
- Black myotis, Myotis nigricans LR/lc
- Montane myotis, Myotis oxyotus LR/lc
- Riparian myotis, Myotis riparius LR/lc
- Genus: Bauerus
- Van Gelder's bat, Bauerus dubiaquercus VU
- Genus: Eptesicus
- Brazilian brown bat, Eptesicus brasiliensis LR/lc
- Argentine brown bat, Eptesicus furinalis LR/lc
- Big brown bat, Eptesicus fuscus LR/lc
- Genus: Lasiurus
- Desert red bat, Lasiurus blossevillii LR/lc
- Tacarcuna bat, Lasiurus castaneus VU
- Southern yellow bat, Lasiurus ega LR/lc
- Genus: Rhogeessa
- Black-winged little yellow bat, Rhogeessa tumida LR/lc
- Genus: Myotis
- Family: Molossidae (Free-tailed Bats)
- Genus: Cynomops
- Greenhall's dog-faced bat, Cynomops greenhalli LR/lc
- Genus: Eumops
- Black bonneted bat, Eumops auripendulus LR/lc
- Dwarf bonneted bat, Eumops bonariensis LR/lc
- Wagner's bonneted bat, Eumops glaucinus LR/lc
- Sanborn's bonneted bat, Eumops hansae LR/lc
- Genus: Molossus
- Black mastiff bat, Molossus ater LR/lc
- Bonda mastiff bat, Molossus bondae LR/lc
- Coiban mastiff bat, Molossus coibensis LR/nt
- Velvety free-tailed bat, Molossus molossus LR/lc
- Miller's mastiff bat, Molossus pretiosus LR/lc
- Sinaloan mastiff bat, Molossus sinaloae LR/lc
- Genus: Tadarida
- Mexican free-tailed bat, Tadarida brasiliensis LR/nt
- Genus: Cynomops
- Family: Emballonuridae (Sac-winged Bats)
- Genus: Balantiopteryx
- Gray sac-winged bat, Balantiopteryx plicata LR/lc
- Genus: Cormura
- Wagner's sac-winged bat, Cormura brevirostris LR/lc
- Genus: Cyttarops
- Short-eared bat, Cyttarops alecto LR/nt
- Genus: Diclidurus
- Northern ghost bat, Diclidurus albus LR/lc
- Genus: Peropteryx
- Greater dog-like bat, Peropteryx kappleri LR/lc
- Lesser doglike bat, Peropteryx macrotis LR/lc
- Genus: Rhynchonycteris
- Proboscis bat, Rhynchonycteris naso LR/lc
- Genus: Saccopteryx
- Greater sac-winged bat, Saccopteryx bilineata LR/lc
- Lesser sac-winged bat, Saccopteryx leptura LR/lc
- Genus: Balantiopteryx
- Family: Mormoopidae (Leaf-chinned Bats)
- Genus: Pteronotus
- Naked-backed bat, Pteronotus davyi LR/lc
- Big naked-backed bat, Pteronotus gymnonotus LR/lc
- Parnell's mustached bat, Pteronotus parnellii LR/lc
- Wagner's mustached bat, Pteronotus personatus LR/lc
- Genus: Pteronotus
- Family: Phyllostomidae (Leaf-nosed Bats)
- Genus: Chrotopterus
- Big-eared woolly bat, Chrotopterus auritus LR/lc
- Genus: Glyphonycteris
- Davies's big-eared bat, Glyphonycteris daviesi LR/nt
- Tricolored big-eared bat, Glyphonycteris sylvestris LR/nt
- Genus: Lampronycteris
- Yellow-throated big-eared bat, Lampronycteris brachyotis LR/lc
- Genus: Lonchorhina
- Tomes's sword-nosed bat, Lonchorhina aurita LR/lc
- Genus: Lophostoma
- Pygmy round-eared bat, Lophostoma brasiliense LR/lc
- White-throated round-eared bat, Lophostoma silvicolum LR/lc
- Genus: Macrophyllum
- Long-legged bat, Macrophyllum macrophyllum LR/lc
- Genus: Micronycteris
- Hairy big-eared bat, Micronycteris hirsuta LR/lc
- White-bellied big-eared bat, Micronycteris minuta LR/lc
- Schmidts's big-eared bat, Micronycteris schmidtorum LR/lc
- Genus: Mimon
- Striped hairy-nosed bat, Mimon crenulatum LR/lc
- Genus: Phylloderma
- Pale-faced bat, Phylloderma stenops LR/lc
- Genus: Phyllostomus
- Pale spear-nosed bat, Phyllostomus discolor LR/lc
- Greater spear-nosed bat, Phyllostomus hastatus LR/lc
- Genus: Tonatia
- Stripe-headed round-eared bat, Tonatia saurophila LR/lc
- Genus: Trachops
- Fringe-lipped bat, Trachops cirrhosus LR/lc
- Genus: Trinycteris
- Niceforo's big-eared bat, Trinycteris nicefori LR/lc
- Genus: Vampyrum
- Spectral bat, Vampyrum spectrum LR/nt
- Genus: Lonchophylla
- Godman's nectar bat, Lonchophylla mordax LR/lc
- Orange nectar bat, Lonchophylla robusta LR/lc
- Genus: Anoura
- Handley's tailless bat, Anoura cultrata LR/lc
- Geoffroy's tailless bat, Anoura geoffroyi LR/lc
- Genus: Choeroniscus
- Godman's long-tailed bat, Choeroniscus godmani LR/nt
- Genus: Glossophaga
- Commissaris's long-tongued bat, Glossophaga commissarisi LR/lc
- Gray long-tongued bat, Glossophaga leachii LR/lc
- Pallas's long-tongued bat, Glossophaga soricina LR/lc
- Genus: Lichonycteris
- Dark long-tongued bat, Lichonycteris obscura LR/lc
- Genus: Carollia
- Silky short-tailed bat, Carollia brevicauda LR/lc
- Chestnut short-tailed bat, Carollia castanea LR/lc
- Seba's short-tailed bat, Carollia perspicillata LR/lc
- Genus: Artibeus
- Aztec fruit-eating bat, Artibeus aztecus LR/lc
- Great fruit-eating bat, Artibeus intermedius LR/lc
- Jamaican fruit bat, Artibeus jamaicensis LR/lc
- Great fruit-eating bat, Artibeus lituratus LR/lc
- Pygmy fruit-eating bat, Artibeus phaeotis LR/lc
- Toltec fruit-eating bat, Artibeus toltecus LR/lc
- Genus: Centurio
- Wrinkle-faced bat, Centurio senex LR/lc
- Genus: Chiroderma
- Salvin's big-eyed bat, Chiroderma salvini LR/lc
- Hairy big-eyed bat, Chiroderma villosum LR/lc
- Genus: Ectophylla
- Honduran white bat, Ectophylla alba LR/nt
- Genus: Enchisthenes
- Velvety fruit-eating bat, Enchisthenes hartii LR/lc
- Genus: Mesophylla
- MacConnell's bat, Mesophylla macconnelli LR/lc
- Genus: Sturnira
- Little yellow-shouldered bat, Sturnira lilium LR/lc
- Highland yellow-shouldered bat, Sturnira ludovici LR/lc
- Louis's yellow-shouldered bat, Sturnira luisi LR/lc
- Talamancan yellow-shouldered bat, Sturnira mordax LR/nt
- Genus: Uroderma
- Tent-making bat, Uroderma bilobatum LR/lc
- Brown tent-making bat, Uroderma magnirostrum LR/lc
- Genus: Vampyressa
- Striped yellow-eared bat, Vampyressa nymphaea LR/lc
- Southern little yellow-eared bat, Vampyressa pusilla LR/lc
- Genus: Vampyrodes
- Great stripe-faced bat, Vampyrodes caraccioli LR/lc
- Genus: Platyrrhinus
- Heller's broad-nosed bat, Platyrrhinus helleri LR/lc
- Greater broad-nosed bat, Platyrrhinus vittatus LR/lc
- Genus: Desmodus
- Common vampire bat, Desmodus rotundus LR/lc
- Genus: Diaemus
- White-winged vampire bat, Diaemus youngi LR/lc
- Genus: Diphylla
- Hairy-legged vampire bat, Diphylla ecaudata LR/nt
- Genus: Chrotopterus
- Family: Furipteridae (Thumbless Bats)
- Genus: Furipterus
- Thumbless bat, Furipterus horrens LR/lc
- Genus: Furipterus
- Family: Thyropteridae (Disk-winged Bats)
- Genus: Thyroptera
- Spix's disk-winged bat, Thyroptera tricolor LR/lc
- Genus: Thyroptera
Ocean Dwellers: Whales and Dolphins (Cetacea)
This group includes whales, dolphins, and porpoises. They are mammals that live entirely in the water. They have sleek bodies with almost no hair, a thick layer of fat called blubber, and fins and tails that help them move through the water.
- Suborder: Mysticeti (Baleen Whales)
- Family: Balaenopteridae (baleen whales)
- Genus: Balaenoptera
- Common minke whale, Balaenoptera acutorostrata
- Sei whale, Balaenoptera borealis
- Bryde's whale, Balaenoptera brydei
- Blue whale, Balaenoptera musculus
- Genus: Megaptera
- Humpback whale, Megaptera novaeangliae
- Genus: Balaenoptera
- Family: Balaenopteridae (baleen whales)
- Suborder: Odontoceti (Toothed Whales)
- Family: Delphinidae (marine dolphins)
- Genus: Delphinus
- Short-beaked common dolphin, Delphinus delphis DD
- Genus: Feresa
- Pygmy killer whale, Feresa attenuata DD
- Genus: Globicephala
- Short-finned pilot whale, Globicephala macrorhyncus DD
- Genus: Lagenodelphis
- Fraser's dolphin, Lagenodelphis hosei DD
- Genus: Grampus
- Risso's dolphin, Grampus griseus DD
- Genus: Orcinus
- Killer whale, Orcinus orca DD
- Genus: Peponocephala
- Melon-headed whale, Peponocephala electra DD
- Genus: Pseudorca
- False killer whale, Pseudorca crassidens DD
- Genus: Sotalia
- Guiana dolphin, Sotalia guianensis DD
- Genus: Stenella
- Pantropical spotted dolphin, Stenella attenuata DD
- Clymene dolphin, Stenella clymene DD
- Striped dolphin, Stenella coeruleoalba DD
- Atlantic spotted dolphin, Stenella frontalis DD
- Spinner dolphin, Stenella longirostris DD
- Genus: Steno
- Rough-toothed dolphin, Steno bredanensis DD
- Genus: Tursiops
- Common bottlenose dolphin, Tursiops truncatus
- Genus: Delphinus
- Family: Physeteridae (sperm whales)
- Genus: Physeter
- Sperm whale, Physeter catodon DD
- Genus: Physeter
- Family: Kogiidae (dwarf sperm whales)
- Genus: Kogia
- Pygmy sperm whale, Kogia breviceps DD
- Dwarf sperm whale, Kogia sima DD
- Genus: Kogia
- Family: Ziphidae (beaked whales)
- Genus: Mesoplodon
- Gervais' beaked whale, Mesoplodon europaeus DD
- Ginkgo-toothed beaked whale, Mesoplodon ginkgodens DD
- Pygmy beaked whale, Mesoplodon peruvianus DD
- Genus: Ziphius
- Cuvier's beaked whale, Ziphius cavirostris DD
- Genus: Mesoplodon
- Family: Delphinidae (marine dolphins)
Meat Eaters: Carnivores (Carnivora)
Carnivores are mammals that mostly eat meat. There are over 260 different kinds of carnivores. They have special skull shapes and teeth that are perfect for hunting and eating other animals.
- Family: Felidae (cats)
- Genus: Herpailurus
- Jaguarundi, Herpailurus yagouaroundi LC
- Genus: Leopardus
- Genus: Puma
- Cougar, Puma concolor LC
- Genus: Panthera
- Jaguar, Panthera onca NT
- Genus: Herpailurus
- Family: Canidae (dogs, foxes)
- Family: Procyonidae (raccoons and their relatives)
- Genus: Bassaricyon
- Northern olingo, Bassaricyon gabbii LR/nt
- Genus: Bassariscus
- Cacomistle, Bassariscus sumichrasti LR/nt
- Genus: Nasua
- White-nosed coati, Nasua narica LR/lc
- Genus: Potos
- Kinkajou, Potos flavus LR/lc
- Genus: Procyon
- Crab-eating raccoon, Procyon cancrivorus LR/lc
- Common raccoon, Procyon lotor LR/lc
- Genus: Bassaricyon
- Family: Mustelidae (weasels, otters)
- Genus: Eira
- Tayra, Eira barbara LR/lc
- Genus: Galictis
- Greater grison, Galictis vittata LR/lc
- Genus: Lontra
- Neotropical river otter, Lontra longicaudis NT
- Genus: Neogale
- Long-tailed weasel, Neogale frenata LR/lc
- Genus: Eira
- Family: Mephitidae (skunks)
- Genus: Conepatus
- Striped hog-nosed skunk, Conepatus semistriatus LR/lc
- Genus: Mephitis
- Hooded skunk, Mephitis macroura LR/lc
- Genus: Conepatus
- Suborder: Pinnipedia (Seals and Sea Lions)
- Family: Otariidae (eared seals, sea lions)
- Genus: Zalophus
- California sea lion, Zalophus californianus LR/lc vagrant
- Galápagos sea lion, Zalophus wollebaeki EN vagrant
- Genus: Zalophus
- Family: Phocidae (earless seals)
- Genus: Neomonachus
- Caribbean monk seal, Neomonachus tropicalis EX
- Genus: Neomonachus
- Family: Otariidae (eared seals, sea lions)
Odd-Toed Hoofed Mammals: Tapirs (Perissodactyla)
These are large mammals that eat plants. They have an odd number of toes on each foot, and their weight is mostly supported by their large middle toe. Tapirs have simple stomachs.
- Family: Tapiridae (tapirs)
- Genus: Tapirus
- Baird's tapir, Tapirus bairdii EN
- Genus: Tapirus
Even-Toed Hoofed Mammals: Peccaries and Deer (Artiodactyla)
These mammals have an even number of toes, and their weight is spread out equally on their third and fourth toes. This group includes many animals that are important to humans, like pigs, deer, and cattle.
- Family: Tayassuidae (peccaries)
- Genus: Dicotyles
- Collared peccary, D. tajacu LC
- Genus: Tayassu
- White-lipped peccary, Tayassu pecari NT
- Genus: Dicotyles
- Family: Cervidae (deer)
- Genus: Mazama
- Red brocket, Mazama temama DD
- Genus: Odocoileus
- White-tailed deer, Odocoileus virginianus LR/lc
- Genus: Mazama
See also
- List of amphibians of Costa Rica
- List of birds of Costa Rica
- List of non-marine molluscs of Costa Rica
- List of reptiles of Costa Rica