Wolf

Wolves are a planned mob. Notch has stated that they are going to be a definite addition and will also have the ability to be tamed to provide Pet Dogs. Notch has confirmed the addition of these animals upon having breakfast with Peter Molyneux, along with confirming Dogs, as said on his blog. Wolfs will be added in Beta 1.4

According to his twitter, Jens is currently working on a wolf mob for the game. On March 18th, 2011, a video was posted showing a preview of wolves.

Wolves will spawn in forest and taiga biomes.

To tame a wolf into a dog, you must feed it a bone when smoke appears around its head.

The difference between a dog and a wolf is that a dog wears a collar.

If you click on another mob, the dogs will attack it for you. The wolves, judging from the video, deal 1.5 hearts

Wolves are said to be rather rare, but they will not despawn once tamed.