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.
This large canine is most commonly found in central Russia and Eastern and Northern Europe. Reaching up to 35 inches in height and weighing between 70 and 130 pounds, the Eurasian wolf is the largest of its kind in Eurasia. The largest recorded Grey Wolf was killed in Romania, and was said to have weighed 158 pounds. Although sometimes referred to as the âGrey Wolfâ, these Wolves arenât always grey in color. In fact, it is common to see cream colored Eurasian wolfs, as well as ones with brown or black pelts. These wolves are more rich in color when found in Northern Europe than elsewhere.