Predators are among the best sleepers of all animals because they worry the least about being attacked. Like many wild cats and leopards sleep in trees. Most American black bears and grizzly bears hirbertnate from 4 to 8 months.
Animals that live in the sea sleep in many different ways. The California sea lion has a variety of sleeping positions -some in the ocean and some on land. Other animals of the sea, such as the dolphins, parrotfish, and manatees, have interestingways of sleeping.
Most birds find safe places to sleep in trees, on building ledges, or on the ground. Starlings gather from far away to sleep in large groups in the trees of cities. The ostrich, owl, and quail are other members of the bird family that have very interesting way of sleeping.
We know that animals sleep in many different places and many unuaual positions for greatly different amounts of time. Althought the sleeping habits of most animals are not like ours, many animals wake up with a big yawn and strecth- just like us!