Mammals, PEK-SAR

Mammals are distinguished by their ability to produce milk. The class Mammalia boasts tremendous diversity in form and habit, and different types of mammals can be wildly different from one another in physical appearance. Living kinds of mammals range in size from a bat weighing less than a gram to the largest animal that has ever lived, the blue whale, which reaches a length or more than 30 metres (100 feet) and a weight of 180 metric tons (nearly 200 short [U.S.] tons).
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Mammals Encyclopedia Articles By Title

Pekingese
Pekingese, breed of toy dog developed in ancient China, where it was held sacred and was kept as a palace dog by......
Peninj mandible
Peninj mandible, an almost perfectly preserved fossil jaw of the hominin (of human lineage) species Paranthropus......
Percheron
Percheron, heavy draft-horse breed that originated in the Perche region of France. The breed probably stems from......
perissodactyl
perissodactyl, any member of the order Perissodactyla, a group of herbivorous mammals characterized by the possession......
Persian deer
Persian deer, fallow deer (Dama mesopotamica) of western Asia. The maral, an Asiatic red deer, also is often called......
phalanger
phalanger, any of several species of Australasian marsupial mammals. They are called possums in Australia and Tasmania.......
Phenacodus
Phenacodus, extinct genus of mammals known from fossils of the late Paleocene and early Eocene epochs of North......
Phoberomys
Phoberomys, extinct rodent genus, the largest rodent ever to have lived, that belongs to the infraorder Caviomorpha,......
Phyllostomidae
Phyllostomidae, family of approximately 150 species of tropical and subtropical bats known collectively as American......
pichi
pichi, South American species of armadillo...
pichiciago
pichiciago, species of armadillo...
pig
pig, wild or domestic swine, a mammal of the Suidae family. In Britain the term pig refers to all domestic swine,......
pika
pika, (genus Ochotona), small short-legged and virtually tailless egg-shaped mammal found in the mountains of western......
pilot whale
pilot whale, (genus Globicephala), either of two species of small, slender toothed whales of the dolphin family......
pinniped
pinniped, (suborder Pinnipedia), any of a group of 34 species of aquatic fin-footed mammals comprising seals, sea......
Pinto
Pinto, (Spanish: “Painted”), a spotted horse; the Pinto has also been called paint, particoloured, pied, piebald,......
pipistrelle
pipistrelle, (genus Pipistrellus), any of about 68 species belonging to the vesper bat family (Vespertilionidae).......
pit bull
pit bull, fighting dog developed in 19th-century England, Scotland, and Ireland from Bulldog and terrier ancestry......
Pithecanthropus
Pithecanthropus, former genus name assigned to fossil hominids including Java man (q.v.) and Peking man (q.v.),......
placental mammal
placental mammal, (infraclass Eutheria), any member of the mammalian group characterized by the presence of a placenta,......
platypus
platypus, (Ornithorhynchus anatinus), a small amphibious Australian mammal noted for its odd combination of primitive......
Pliohippus
Pliohippus, extinct genus of horses that inhabited North America during the Pliocene Epoch (5.3–2.6 million years......
pocket gopher
pocket gopher, (family Geomyidae), any of 38 species of predominantly North and Central American rodents named......
pocket mouse
pocket mouse, any of 36 species of American rodents having fur-lined external cheek pouches that open alongside......
pointer
pointer, highly regarded breed of sporting dog of hound, spaniel, and setter ancestry. The pointer derives its......
Poland China
Poland China, breed of pig developed between 1835 and 1870 in Butler and Warren counties, Ohio, U.S., by a fusion......
polar bear
polar bear, (Ursus maritimus), great white northern bear (family Ursidae) found throughout the Arctic region. The......
polecat
polecat, any of several weasellike carnivores of the family Mustelidae (which includes the weasel, skunk, mink,......
Pomeranian
Pomeranian, breed of toy dog that can be traced back—like the related Keeshond, Samoyed, and Norwegian Elkhound—to......
pony
pony, any of several breeds of small horses standing less than 14.2 hands (147 cm, or 58 inches) high and noted......
Poodle
Poodle, breed of dog thought to have originated in Germany but widely associated with France, where it is hugely......
porcupine
porcupine, any of several species of large, herbivorous, quill-bearing rodents active from early evening to dawn.......
porpoise
porpoise, (family Phocoenidae), specifically, any of seven species of toothed whales distinguishable from dolphins......
potto
potto, (Perodicticus potto), slow-moving tropical African primate. The potto is a nocturnal tree dweller found......
prairie dog
prairie dog, (genus Cynomys), any of five species of burrowing, colony-forming squirrels that inhabit plains, high......
proboscidean
proboscidean, (order Proboscidea), any of the group of mammals that includes elephants and their extinct relatives......
proboscis monkey
proboscis monkey, (Nasalis larvatus), long-tailed arboreal primate found along rivers and in swampy mangrove forests......
procyonid
procyonid, (family Procyonidae), any of a group of tree-climbing mammals comprising raccoons, coatis, olingos,......
pronghorn
pronghorn, (Antilocapra americana), North American hoofed mammal, the sole living member of the old ruminant family......
Przewalski’s horse
Przewalski’s horse, (subspecies Equus caballus przewalskii or E. ferus przewalskii), last wild horse subspecies......
Ptilodus
Ptilodus, extinct genus of mammals found as fossils in deposits dated to the Paleocene Epoch (65.5–55.8 million......
pug
Pug, breed of toy dog that probably originated in China and was introduced to England near the end of the 17th......
puku
puku, antelope species of the genus Kobus...
puli
puli, small sheepdog breed introduced to Hungary about 1,000 years ago by the Magyars (early Hungarians). An agile......
puma
puma, (Puma concolor), large brownish New World cat comparable in size to the jaguar—the only other large cat of......
Père David’s deer
Père David’s deer, (Elaphurus davidianus), large, rare Asian deer in the family Cervidae (order Artiodactyla).......
quagga
quagga, (subspecies Equus quagga quagga), subspecies of plains zebra (Equus quagga) formerly found in vast herds......
quokka
quokka, marsupial mammal, a species of wallaby...
rabbit
rabbit, any of 29 species of long-eared mammals belonging to the family Leporidae, excluding hares (genus Lepus).......
raccoon
raccoon, (genus Procyon), any of seven species of nocturnal mammals characterized by bushy ringed tails. The most......
raccoon dog
raccoon dog, (Nyctereutes procyonoides), member of the dog family (Canidae) native to eastern Asia and introduced......
Ramapithecus
Ramapithecus, fossil primate dating from the Middle and Late Miocene epochs (about 16.6 million to 5.3 million......
Rambouillet
Rambouillet, breed of sheep, developed from selections of a few hundred of the best Merino sheep of Spain in 1786......
rasse
rasse, small Asiatic mammal, a species of civet...
rat
rat, (genus Rattus), the term generally and indiscriminately applied to numerous members of several rodent families......
rat kangaroo
rat kangaroo, any of the 11 living species of Australian and Tasmanian marsupials constituting the families Potoroidae......
rat opossum
rat opossum, (family Caenolestidae), any of six species of South American marsupials in the order Paucituberculata.......
ratel
ratel, (Mellivora capensis), badgerlike member of the weasel family (Mustelidae) noted for its fondness for honey.......
red bat
red bat, (Lasiurus borealis), migratory vesper bat (family Vespertilionidae) found in wooded areas of North America.......
red deer
red deer, (Cervus elaphus), well-known deer, in the family Cervidae (order Artiodactyla), that is native to North......
red flyer
red flyer, one of the largest species of kangaroo...
red fox
red fox, (Vulpes vulpes), species of fox (family Canidae) found throughout Europe, temperate Asia, northern Africa,......
red panda
red panda, (Ailurus fulgens), reddish brown, long-tailed, raccoonlike mammal, about the size of a large domestic......
red river hog
red river hog, African hoofed mammal, a subspecies of bush pig...
reedbuck
reedbuck, (genus Redunca), any of three medium-sized antelopes (family Bovidae) that inhabit the grasslands and......
reindeer
reindeer, (Rangifer tarandus), species of deer (family Cervidae) found in the Arctic tundra and adjacent boreal......
retriever
retriever, any of several sporting dogs bred and trained to retrieve game. Retrievers are characterized by water-resistant......
Rex cat
Rex cat, curly-coated breed of domestic cat that has a dense, soft coat lacking any projecting guard hairs, or......
rhesus monkey
rhesus monkey, (Macaca mulatta), sand-coloured primate native to forests but also found coexisting with humans......
rhinoceros
rhinoceros, (family Rhinocerotidae), any of five or six species of giant horn-bearing herbivores that include some......
Rhodesian Ridgeback
Rhodesian Ridgeback, South African hound dog breed characterized by a narrow band of hair that grows forward along......
ribbon seal
ribbon seal, (Histriophoca fasciata), earless seal of the family Phocidae found in the North Pacific and the Bering......
rice rat
rice rat, (genus Oryzomys), any of 36 nocturnal species of small rodents found from the United States southward......
right whale
right whale, (family Balaenidae), any of four species of stout-bodied whales having an enormous head measuring......
ringed seal
ringed seal, (Pusa, or Phoca, hispida), nonmigratory, earless seal (family Phocidae) of North Polar seas and a......
river dolphin
river dolphin, any of six species of small, usually freshwater aquatic mammals that are related to whales (order......
roan antelope
roan antelope, (Hippotragus equinus), one of the largest and most formidable African antelopes (family Bovidae)......
rodent
rodent, (order Rodentia), any of more than 2,050 living species of mammals characterized by upper and lower pairs......
roe deer
roe deer, (genus Capreolus), small, graceful Eurasian deer of the family Cervidae (order Artiodactyla). There are......
rorqual
rorqual, (genus Balaenoptera), any of five particular species of baleen whales—specifically the blue whale, fin......
Ross seal
Ross seal, (Ommatophoca rossi), Antarctic seal of the family Phocidae. It has a short face, very large eyes, and......
Rottweiler
Rottweiler, breed of working dog that is thought to be descended from drover dogs (cattle-driving dogs) left by......
royal antelope
royal antelope, (Neotragus pygmaeus), a hare-sized denizen of West Africa’s lowland rainforest that is the world’s......
ruminant
ruminant, (suborder Ruminantia), any mammal of the suborder Ruminantia (order Artiodactyla), which includes the......
Russian Blue
Russian Blue, breed of domestic cat noted for the quality of its short, plushlike coat. Characteristically a quiet......
Saanen
Saanen, popular breed of dairy goat originating in the Saanen Valley of Switzerland. The coat of the Saanen is......
sable
sable, (Martes zibellina), graceful carnivore of the weasel family, Mustelidae, found in the forests of northern......
sable antelope
sable antelope, (Hippotragus niger), one of Africa’s most impressive antelopes and a member of the horse antelope......
sabre-toothed cat
sabre-toothed cat, any of the extinct catlike carnivores belonging to either the extinct family Nimravidae or the......
Saccopastore skulls
Saccopastore skulls, two Neanderthal fossils found in 1929 and 1935 in a river deposit on the bank of a small tributary......
saiga
saiga, (Saiga tatarica), medium-sized hoofed mammal of the family Bovidae (order Artiodactyla) that lives in herds......
Saint Bernard
Saint Bernard, working dog credited with saving the lives of more than 2,000 people in 300 years of service as......
saki
saki, any of 22 species of arboreal South American monkeys having long nonprehensile furred tails. The 16 species......
saluki
saluki, breed of hound whose ancestors may date to 7000 to 6000 bce. Sacred to the Egyptians, who called it the......
sambar
sambar, (Cervus unicolor), widely distributed deer, family Cervidae (order Artiodactyla), found from India and......
Samoyed
Samoyed, breed of working dog developed in Siberia, where its ancestors were kept by the Nenets (formerly Samoyed......
sand rat
sand rat, either of two species of gerbils in the genus...
Santa Gertrudis
Santa Gertrudis, breed of beef cattle developed in the 20th century by the King Ranch in Texas. It originally resulted......
saro
saro, rare South American species of otter...

Mammals Encyclopedia Articles By Title