I really wanted to hear the wolves howl, but had to consider myself lucky just to be able to view and photograph them. Wolves keep in touch by howling. This type of communication among wolves has several meanings. It serves as a warning to other packs to stay away from their hunting ground. A howl is used to call the pack together after a hunt is over. Sometimes wolves howl just for the pleasure of it, and to reinforce ties between members of the pack.