Ursus Ursinus is the scientific name for the American black bear. There are several synonyms used to refer to this large mammal, including Ursus americanus, Euarctos americanus, and Selenarctos americanus. The American black bear is found across North America, from coast to coast, and is known for its excellent tree-climbing abilities. These bears are omnivorous and feed on a variety of plant and animal species. While they are generally shy creatures, they can become dangerous when threatened or if they perceive a threat to their cubs. Overall, the American black bear is an important part of many ecosystems and plays a vital role in maintaining a healthy balance within them.