Some interesting facts about animals include that elephants have the largest brain of any mammal ever, many species of fish change gender depending on need, and beavers live 29-hour days during the winter. Because elepha... More » Pets & Animals Animal Reproduction

Arizona's diverse landscape provides habitats for several unique animals, including elk, mountain lions, bobcats, ringtail cats and desert bighorn sheep. Desert creatures such as tarantulas, rattlesnakes and scorpions ar... More » Pets & Animals Mammals

One of the most interesting facts about rhinoceroses is that they are descendants of some of the largest land animals to live on the planet. Prehistoric rhinos, called Indricotherium, stood over 17 feet tall at the shoul... More » Pets & Animals Mammals

There are few observable traits distinguishing migrating animals from non-migratory species. Many birds, such as Arctic terns, mallards and bar-tailed godwits migrate across vast distances, while some of their close rela... More »

Some fish eggs can hatch within three days of being laid, while others can take as long as 14 days. The length of time it takes a fish egg to hatch depends on many factors, including the species of fish and environmental... More » Pets & Animals Animal Reproduction

The Oregon Zoo is located in Washington Park, near the city of Portland, and is home to over 1,900 individual animals, featuring over 230 species including birds, mammals, reptiles, amphibians and fish. There are also mo... More » Business & Finance Corporations

The Tennessee River hosts nesting bald eagles, contains more that 230 species of marine life and is the sanctuary for both endangered and threatened animals. The Tennessee River and surrounding Tennessee River Valley has... More » Geography Bodies of Water