When a wolf howls, it is an eerie, spine-tingling sound to those who hear it. To the wolf, it’s a form of communicating with his pack. These little understood animals are the largest members of the dog family and the grey wolf is the most common. This adaptable animal was once found all over the Northern Hemisphere, but today are found mainly in Alaska, Canada and Asia. Few grey wolves survive in Europe, but where populations are high, many wolves are not averse to attacking domestic animals. As a result, many have been shot, poisoned or trapped. Wolves have a long history with humans and are often feared, although attacks on people are extremely rare.