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.Know More
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
PetMD lists behavioral changes, nesting, attempting to nurse, enlarged mammary glands, restlessness, lactation and a swollen abdomen as signs that a female dog is affected by a phantom pregnancy. The symptoms vary somewhat between dogs, especially since several different conditions can cause phantom pregnancies.Full Answer >
Signs that a dog may be ready to have her puppies include a drop in temperature and enlarged mammary glands. The dog's behavior may also indicate nearness to giving birth, as Daily Puppy points out, with the pregnant dog displaying nesting behaviors or relestlessness.Full Answer >
The anatomical and physiological features birds and mammals have in common are possessing a spinal cord and vertebral column, four-chambered hearts and warm-bloodedness. Birds and mammals also both generally invest a great deal of time and energy into raising their young, and are energetic and active consumers. Both birds and mammals have flying, fully terrestrial and amphibious members, although mammals have a wider range of lifestyles.Full Answer >
The camel's hump is a contiguous part of the animal's anatomy and does not serve as a separate storage tank; this part of the camel's body is composed primarily of fat. However, the camel can use the fat in this part of the body when food is scarce, and as the fat is used, the hump will become loose and droopy.Full Answer >