Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
mammal
Table of Contents
References & Edit History Quick Facts & Related Topics
Images & Videos
polar bear and cubs okapi faunal realms goat herding Steller's sea cow bottlenose dolphins journey of a fertilized egg embryonic development leopard Yellowstone wolf pack
For Students
polar bear and cubs
mammal summary
Quizzes
Dromedary camels (Camelus dromedarius). Animals, mammals.
Ultimate Animals Quiz
Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
Animal Group Names
Lion (panthera leo)
Deadliest Animals Quiz
Young chimpanzee dressed in a shirt and sweater vest, scratching his head thinking. (primates)
Wild Words from the Animal Kingdom Vocabulary Quiz
The cheetah is the fastest land animal over short distances. It has become an endangered species in Africa, and is almost extinct in Asia. Cheetah mother with young. Cheetah cubs
Moms of the Animal Kingdom Quiz
Related Questions
Read Next
animal. Amphibian. Frog. Anura. Ranidae. Frog in grass.
Abundant Animals: The Most Numerous Organisms in the World
Ruminant. Deer. Red deer. Cervus elaphus. Buck. Stag. Antlers.
9 of the World’s Deadliest Mammals
sea turtle (reptile). Green turtle (Chelonia mydas) (C. mydas) off the Hawaii Islands, Pacific Islands. Green sea turtle, chelonian. Homepage blog 2011, science and technology, animal
5 Vertebrate Groups
Platypus (Ornithorhynchus anatinus) swimming on the surface of a creek. Water Australia mammal monotreme
Why Is the Platypus a Mammal?
cat. orange and white persian cat with long hair, snarl, growl, teeth
7 Questions About Mammals Answered
Discover
Illustration for Demystified "How Dangerous is Quicksand"
How Deadly Is Quicksand?
A mug shot taken by the regional Colombia control agency in Medellin
Pablo Escobar: 8 Interesting Facts About the King of Cocaine
Baseball laying in the grass. Homepage blog 2010, arts and entertainment, history and society, sports and games athletics
10 Greatest Baseball Players of All Time
The field takes the turn one after the restart during the 103rd Indianapolis 500 at Indianapolis Motor Speedway on May 26, 2019 in Indianapolis, Indiana. (auto racing, Indy 500)
Why Is the Indy 500 Held on Memorial Day Weekend?
President Richard M. Nixon smiles and gives the victory sign as he boards the White House helicopter after his resignation on August 9, 1974 in Washington, D.C.
Timeline of the 1970s
Germans from East and West stand on the Berlin Wall in front of the Brandenburg Gate in the November 10, 1989, photo, one day after the wall opened.
Timeline of the 1980s
Computer mapping, woman at early 1990s computer
Timeline of the 1990s

mammal: Facts & Related Content

News •

Bird flu outbreaks in mammals double, raising human risk: Report • May 24, 2025, 12:44 AM ET (Medical Xpress)
Heat triggers sperm activation for fertilization in mammals • May 3, 2025, 3:24 AM ET (News-Medical)

Facts

Also Known As Mammalia

Photos and Videos

polar bear and cubs
okapi
faunal realms
goat herding
Steller's sea cow
bottlenose dolphins
journey of a fertilized egg
embryonic development
leopard
Yellowstone wolf pack
The video thumbnail shows a small squirrel peeking out of a snowy bank, with a blue circle surrounding it.
Collage showing a dog plus a saber-toothed cat equaling a prehistoric, quadrupedal creature with thick limbs and dark, hairless skin.
Which mammals have the shortest and longest gestations
See All Videos and Images →

Related Topics and References

Topics
Dig Deeper: More Articles That Discuss This Topic

Key People

Karl Ernst, Ritter von Baer
Karl Ernst von Baer
Prussian-Estonian embryologist
George Gaylord Simpson
American paleontologist
Purkinje, Jan Evangelista
Jan Evangelista Purkinje
Czech physiologist
Voit, Carl von
Carl von Voit
German physiologist
Baird, Spencer Fullerton
Spencer Fullerton Baird
American naturalist
Steen Willadsen
Danish embryologist
Geoffrey Bourne
American anatomist
William Diller Matthew
William Diller Matthew
Canadian-American paleontologist
Flower, 1883
Sir William Henry Flower
British zoologist
Reginald Innes Pocock
English zoologist
Reinier de Graaf, engraving by an unknown artist
Reinier de Graaf
Dutch physician
John Bachman
American naturalist and minister

Related Quizzes and Features

Quiz
Lion (panthera leo)
Deadliest Animals Quiz
Nine-Banded Armadillo.
A Is for Animal Quiz
Dromedary camels (Camelus dromedarius). Animals, mammals.
Ultimate Animals Quiz
Lion (panthera leo)
Deadliest Animals Quiz
Young chimpanzee dressed in a shirt and sweater vest, scratching his head thinking. (primates)
Wild Words from the Animal Kingdom Vocabulary Quiz
Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
Animal Group Names
vulture. An adult bearded vulture at a raptor recovery center. The Gypaetus barbatus also known as the Lammergeier or Lammergeyer, is a bird of prey and considered an Old World vulture.
Animal Factoids
Mute swan with cygnet. (birds)
Match the Baby Animal to Its Mama Quiz
Giraffe standing in grass, Kenya.
Know Your Mammals Quiz
The cheetah is the fastest land animal over short distances. It has become an endangered species in Africa, and is almost extinct in Asia. Cheetah mother with young. Cheetah cubs
Moms of the Animal Kingdom Quiz
The cheetah is the fastest land animal over short distances. It has become an endangered species in Africa, and is almost extinct in Asia. Cheetah mother with young. Cheetah cubs
Moms of the Animal Kingdom Quiz
List
Ruminant. Deer. Red deer. Cervus elaphus. Buck. Stag. Antlers.
9 of the World’s Deadliest Mammals
sea turtle (reptile). Green turtle (Chelonia mydas) (C. mydas) off the Hawaii Islands, Pacific Islands. Green sea turtle, chelonian. Homepage blog 2011, science and technology, animal
5 Vertebrate Groups
animal. Amphibian. Frog. Anura. Ranidae. Frog in grass.
Abundant Animals: The Most Numerous Organisms in the World
cat. orange and white persian cat with long hair, snarl, growl, teeth
7 Questions About Mammals Answered