1 Canker sores are small, painful ulcers on the inside of the mouth, tongue, lips, or throat. 2  Symptoms of canker sores include small, painful, crater-like ulcers.  See a doctor if canker sores are accompanied by fever, last more than three weeks, or the affected individual has difficulty swallowing.
When people think of wolves, one species usually comes to mind: the gray wolf. The gray wolf is the largest wolf and the basis of legends. According to National Geographic, the breed was almost hunted to extinction in the lower 48 states of the United States. Even now, few exist outside Alaska.
Gray wolf belongs to the family of dogs with others like jackals, coyotes and foxes. Gray wolf is certainly the biggest dogs in the family. The pups of gray wolf have an initial weight of about 1 pound. Scientifically, these types of wolves are known as âCanis lupusâ.ypes Of Wolves | Three Wolf Types. Though there are many subspecies of wolf but generally there are three types of wolves namely red wolf, gray wolf and Ethiopian wolf. Letâs study each of these three types of wolves in detail.