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.
The longest life span of alligators living in captivity is recorded of an American alligator that died at the age of 85 in Paris, 1937. The oldest Chinese alligator lived was recorded at 60 â 70 years. According to researchers, alligators are not the Methuselahs for which they are generally known for; besides, less than 10% of the young live up to two years old. However, the average life span of alligators in the wild is estimated at 50 years. Alligators fancy living in fresh water while crocodiles can bear salt water. Alligators are strong territorial animals as they defend their territories actively.