All mammals have hair that covers at least part of their bodies, nurse their young through mammary glands and have muscular, four-chambered hearts. All mammals also have three inner ear bones: the incus, malleus and stapes, and lower jaws made of a single bone. All mammals are vertebrates, which means that they have backbones, and they are all warm-blooded, which means they are capable of regulating their own body temperature.Continue Reading
The fact that mammals are warm-blooded makes them able to live in most any climate on Earth. Their bodies are capable of maintaining a constant internal temperature regardless of their surroundings. Maintaining a constant body temperature requires a lot of energy, so mammals tend to eat plentiful diets.
Female mammals produce milk for their young, and this milk is secreted through mammary glands. Most, but not all, mammals have mammary glands that are encased in nipples. The platypus and echidna do not have nipples, and instead secrete milk from specialized ducts in their abdomens. Producing milk allows mammals to spend more time with their young and teach them how to survive.
Mammals are the only class of animals on Earth that have hair. Some mammals are completely covered in hair, while others, such as whales, have only sparse patches of hair. Hair helps mammals regulate their body temperature by providing a layer of insulation between their bodies and the external environment.Learn more about Mammals
A skunk's spray is an oily liquid produced in glands that are located under its tail. The skunk ejects this liquid when it's threatened by predators. Skunks have high accuracy when spraying within 10 feet and can spray as far as 25 feet with lower accuracy.Full Answer >
Mammals, unlike other animals, have hair, mammary glands and give birth to live young. Mammals have a regular body temperature and a four-chambered heart.Full Answer >
There are over 4000 species of mammals worldwide, but all share the same defining characteristics that separate them from other members of the phylum Chordata. These characteristics include having hair, being warm-blooded and producing milk for their young. All mammals except the platypus and echidna give birth to live young.Full Answer >
Whales are classified as mammals and not as fish because they give birth to live young. They also have a sparse amount of fur on their bodies, they have lungs that breathe air and they give milk to their young.Full Answer >