Mammals get their name from the Latin word mamma ... whereas sheep and goats each have two teats protruding from the udder. These mammary glands are modified sweat glands.

Mammals and birds require much more food and energy than do cold-blooded animals ... One notable exception is the American hairless terrier, which has sweat glands all over its body, illustrating the ...

unlike most other mammals, primates lack a key mechanism for cooling the blood around the brain when it’s hot outside or after exercise. This means that the temperature of the brain increases when the ...

A person may sometimes be able to smell the ammonia content in their sweat. Sweat glands all over the body release sweat. There are three types of sweat glands, which are called the eccrine ...

What is the purpose of fingerprints and why have we evolved them? Why do we have so many sweat glands on our palms and what do the answers to these questions mean for the future? These are the key ...

Unlike birds and mammals, reptiles do not maintain a constant internal body temperature. Without fur or feathers for insulation, they cannot stay warm on a cold day, and without sweat glands or ...