several species of a large carnivorous mammal, related to giant
pandas, lesser pandas , raccoons, and dogs. A bear is distinguished
from members of the other carnivore families by its heavy body;
short tail; short, rounded ears; and plantigrade feet (both heel
and sole touch the ground, as in humans) with five clawed toes.
It also lacks the shearing teeth common to most carnivores; the
crushing molars of a bear are believed to be an adaptation for a
plant diet. Although all bears are classified as carnivores, the
different species vary widely in their feeding habits. For example,
the polar bear feeds almost exclusively on seals and other animals,
but it may also graze on vegetation; the grizzly eats grasses, herbs,
berries, and nuts as well as living on dead fish and other animals.