Posterior Cerebral Artery. Long shunned by Neuroangio for no fault of its own, the PCA is now getting the attention it richly deserves. The PCA is an old vessel, in fact emerging in the lower species prior to development of the MCA.
River Otters are mammals that are relatives of the stoats, weasels, mink, badgers and wolverines. These groups of mammals are known as Mustelids. The Mustelids all have one thing in common, they all have scent glands that they use to mark off their territory. In the wild they live less than 10 years; in captivity they live 10 - 15 years. Range/Habitat: River otters are found along rivers, streams, and lakes and also in estuaries, coastal bogs, and large marine waterways such as Puget Sound and the Strait of Juan de Fuca.
If fish populations start to decrease, river otters would lose their major food source, and their numbers will start to decline too. The river otter is also threatened by pollution of streams and rivers as well as the destruction of the vegetation on the banks of water bodies. Did You Know? River otters can hold their breath for up to 8 minutes underwater. River otters can dive to a depth of up to 60 feet. Otters always wash themselves after every meal. River otters spend two-thirds of their time on land.