Different parts of the brain control different functions. Cancer treatments, including chemotherapy, can produce certain effects on these areas of the brain, including impaired cognitive skills, chemo-induced seizures, and memory loss. The cerebral cortex is a sheet of tissue that makes up the outer layer of the brain.
There are three species of wolves: the Red Wolf, the Gray Wolf, and the Ethiopian Wolf. There are a lot more subspecies of wolves, such as: Mexican Wolf.
Wolves have unique howls, like fingerprints, that scientists (and other pack members) can use to tell them apart. There are an estimated 7,000 to 11,200 gray wolves in Alaska, 3,700 in the Great Lakes region and 1,675 in the Northern Rockies. Gray wolves were once common throughout all of North America, but were exterminated in most areas of the United States by the mid 1930s. Today, their range has been reduced to Canada, Alaska, the Great Lakes, northern Rockies and Pacific Northwest.