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endothermy, hair, completely divided heart, milk, single jawbone, specialized teeth
six characteristics all mammals possess
why meat is easier to digest
plants have cellulose, animals do not have enzymes that breakdown cellulose
how herbivores can digest plants
have long digestive tracts of herbivores contain microorganisms that can produce enzymes capable of breaking down cellulose
contains microorganisms to break down cellulose, material is partially digested and then regurgitated, chewed and swallowed again
sac branching from the small intestine that serves as a fermentation chamber; horses and zebras have them
lays one or two large eggs, encased in a thin leathery shelland then incubates the eggs; hatched small and partially developed ; The mother protects her young, feeding it with milk until it is ready to survive on its own
Embryos develop for a short period within the mother's uterus; They then emerge from the uterus and crawl into a skin-lined pocked on the mother's abdomen called a pouch; Within the pouch the newborn attaches to a nipple and feeds on milk as it continues to grow and develop within the pouch for several more months
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