Animals in the mammalian class, including elephants, dogs, cats, apes, bats, sloths, lemurs, horses and beavers, have sweat glands and sweat through either their eccrine, their apocrine sweat glands or both. Primate mammals, such as apes, gorillas and humans, have eccrine sweat glands all over their bodies. Non-primate mammals, such as dogs and cats, have apocrine glands on their paws and feet that help to cool them off.Know More
Whole body cooling through sweating and evaporation is most effective among humans but is also observed among apes and catarrhine primates, or Old World monkeys. Non-human, hairy primates, such as the gorilla and chimpanzee, sweat through their armpits, palms of their hands and soles of their feet. Contrary to popular belief, pigs, rhinos and hippos, like other warm-blooded mammals, do have sweat glands. They pass sweat through passive diffusion, which is ineffective for cooling their bodies. They cool off by wallowing in cool water or mud, which has the same cooling effect as sweating.
Most non-primate mammals have apocrine sweat glands on their hair follicles. The glands secrete an oily, opaque and colorless liquid that gains a foul odor upon bacterial decomposition. The apocrine sweat gland is also called the scent gland as it is not as effective for cooling as the eccrine sweat gland. In humans, these glands can be found on the armpit and perianal areas.Learn more about Zoology
Animals with exoskeletons include all arthropods such as insects, crustaceans and spiders as well as many other invertebrate animals such as shelled mollusks. Shelled mollusks include snails, tusk shells, clams, nautilus and chitons. An exoskeleton is essentially an outer skeleton that protects and supports an animal's body.Full Answer >
Mammals are vertebrate animals that have hair, a heart with four chambers, a diaphragm and mammary glands. Two mammals whose common names begin with the letter N are the nine-banded armadillo and the northern bottlenose whale.Full Answer >
Mammals are distinguished from other animals by having mammary glands and complex hair follicles, and by the structure of their skulls, which feature highly modified jaw bones. Mammals are also warm-blooded and have a number of adaptations to allow for high metabolism.Full Answer >
A 2008 study shows that sloths in the wild sleep for about nine hours, while sloths in captivity appear to sleep for 15 to 20 hours per day. The study monitored three-toed sloths, so the sleeping patterns of the larger two-toed sloth remain unverified as of 2014.Full Answer >