Wolf's skin is changed to the color of its collar when tamed the second it becomes aggressive towards a mob

Steps to reproduce:

1. Summon some sheep
2. Summon one wolf away from the sheep
3. Immediately switch to bones and tame the wolf

If the timing is right, the wolf will become a dog, but it will be dark red with angry eyes as long as a sheep or fox is nearby.

It will sit when clicked like a dog, but it will become dark red and attack any sheep/fox nearby. If there are no sheep/foxes nearby, it will become normal texture (dog), but it will become red again if any sheep come close.

This also seems to work with foxes instead of sheep. It requires precise timing to perform.

On the screen capture, the "dog" is sitting down but it has a solid dark dark color and angry eyes.