This is a list of the mammal species recorded in Puerto Rico. These are the mammal species in Puerto Rico, of which one is critically endangered, none are endangered, two are vulnerable, and none are near-threatened. Two of the species listed for Puerto Rico are considered to be extinct.
The following tags are used to highlight each species' conservation status as assessed by the IUCN:
Some species were assessed using an earlier set of criteria. Species assessed using this system have the following instead of near threatened and least concern categories:
Sirenia is an order of fully aquatic, herbivorous mammals that inhabit rivers, estuaries, coastal marine waters, swamps, and marine wetlands. All four species are endangered.
Family: Trichechidae
Genus: Trichechus
West Indian manatee, Trichechus manatus VU
Rodents make up the largest order of mammals, with over 40 percent of mammalian species. They have two incisors in the upper and lower jaw which grow continually and must be keep short by gnawing. Most rodents are small though the capybara can weigh up to 45 kg (100 lb).
Suborder: Hystricomorpha
Family: Capromyidae
Subfamily: Isolobodontinae
Genus: Isolobodon
Puerto Rican hutia, Isolobodon portoricensis EX
The bats' most distinguishing feature is that their forelimbs are developed as wings, making them the only mammals in the world naturally capable of flight. Bat species account for about 20% of all mammals.
Family: Noctilionidae
Genus: Noctilio
Greater bulldog bat, Noctilio leporinus LR/lc
Family: Vespertilionidae
Subfamily: Vespertilioninae
Genus: Lasiurus
Eastern red bat, Lasiurus borealis LR/lc
Family: Molossidae
Genus: Molossus
Velvety free-tailed bat, Molossus molossus LR/lc
Genus: Tadarida
Mexican free-tailed bat, Tadarida brasiliensis LR/nt
Family: Mormoopidae
Genus: Mormoops
Antillean ghost-faced bat, Mormoops blainvillii LR/nt
Genus: Pteronotus
Parnell's mustached bat, Pteronotus parnellii LR/lc
Sooty mustached bat, Pteronotus quadridens LR/nt
Family: Phyllostomidae
Subfamily: Phyllostominae
Genus: Macrotus
Waterhouse's leaf-nosed bat, Macrotus waterhousii LR/lc
Subfamily: Brachyphyllinae
Genus: Brachyphylla
Antillean fruit-eating bat, Brachyphylla cavernarum LR/lc
Subfamily: Phyllonycterinae
Genus: Phyllonycteris
Puerto Rican flower bat, Phyllonycteris major EX
Subfamily: Glossophaginae
Genus: Monophyllus
Leach's single leaf bat, Monophyllus redmani LR/lc
Subfamily: Stenodermatinae
Genus: Artibeus
Jamaican fruit bat, Artibeus jamaicensis LR/lc
Genus: Stenoderma
Red fruit bat, Stenoderma rufum VU
The order Cetacea includes whales, dolphins and porpoises. They are the mammals most fully adapted to aquatic life with a spindle-shaped nearly hairless body, protected by a thick layer of blubber, and forelimbs and tail modified to provide propulsion underwater.
Suborder: Mysticeti
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
Suborder: Odontoceti
Superfamily: Platanistoidea
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: 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
Family: Physeteridae (sperm whales)
Genus: Physeter
Sperm whale, Physeter catodon (DD)
Family: Kogiidae (dwarf sperm whales)
Genus: Kogia
Pygmy sperm whale, Kogia breviceps (DD)
Dwarf sperm whale, Kogia sima (DD)
Superfamily Ziphioidea
Family: Ziphidae (beaked whales)
Genus: Mesoplodon
Gervais' beaked whale, Mesoplodon europaeus (DD)
Blainville's beaked whale, Mesoplodon densirostris (DD)
True's beaked whale, Mesoplodon mirus (DD)
Genus: Ziphius
Cuvier's beaked whale, Ziphius cavirostris (DD)
There are over 260 species of carnivorans, the majority of which feed primarily on meat. They have a characteristic skull shape and dentition.
Suborder: Pinnipedia
Family: Phocidae (earless seals)
Genus: Cystophora
Hooded seal, Cystophora cristata LR/lc (accidental)
Genus: Monachus
Caribbean monk seal, Monachus tropicalis EX
Family: Canidae
Genus: Canis
Sato, Canis lupus familiaris LR/lc
Family: Felidae
Genus: Felis
Feral cat, Felis catus LR/lc
