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.
The gray wolf or grey wolf (Canis lupus) also known as the timber wolf, or western wolf, is a canid native to the wilderness and remote areas of North America and Eurasia.It is the largest extant member of its family, with males averaging 43â45 kg (95â99 lb), and females 36â38.5 kg (79â85 lb).he gray wolf is the second most specialised member of the genus Canis, after the Ethiopian wolf, as demonstrated by its morphological adaptations to hunting large prey, its more gregarious nature, and its highly advanced expressive behavior.