The family Ursidae has eight species of omnivorous bears that have large claws and teeth; small eyes and ears; short tails; and long, rough fur. They range in weight from 55 pounds for the sun bear of Asia to 1,700 pounds for the polar bear of the Arctic region.Continue Reading
Most species of Ursidae are large, robust animals. They are mammals and generally socialize only during mating season. Males monitor females for estrus in their range, which is large because they eat a lot of diverse foods, and stay with the females for a few days while they are receptive. Mothers give birth to one to four young at intervals of one to four years. In the wild bears may live for 25 years; in captivity some have lived for 50 years. Bears may seem awkward because of their shuffling gait but can run fast, climb and swim.
Bears are on all continents except Australia and Antarctica. They live in diverse habitats, but access to water is important. They are most abundant in temperate and forest regions but can be found in most habitats throughout their distribution, including deserts, mountains, grasslands, Arctic tundra and ice floes.
Their distribution is mostly in the Northern Hemisphere, but they once had ranged as far south as the Andes Mountains of South America, the Atlas Mountains of northwestern Africa and the Sunda Shelf region of Sumatra, Borneo and Java. Their southerly distribution is now reduced because of hunting and loss of habitat.Learn more about Zoology
Insects do not have ears like those of a human, but some species are able to hear through similar structures. In most of these species, the tympanal organ serves a similar purpose to the human eardrum.Full Answer >
Animals living on the tundra have characteristics suited for extreme cold, such as heavy fur coats and small ears. Many also have behavioral adaptations, such as traveling south for winter or huddling together for warmth.Full Answer >
Class Agnatha contains primarily species of jawless fish, and prominent members of this family include lampreys and hagfish. Lampreys and hagfish, like others in their class, resemble eels. Both species share distinguishing characteristics with other organisms in the class Agnatha, including a notochord, vertebral skeletal structure, lack of stomach and a pineal eye.Full Answer >
The tiger's kingdom, phylum, class, order, family, genus and species, referred to as its taxonomy, is the kingdom animalia, the phylum chordata (which may also be called vertebrata), the class mammalia, the order carnivora, the family felidae, the genus panthera and the species p. tigris. Within the p. tigris species there are 10 sub-species.Full Answer >