I placed three wolves in a village, and tamed one of them. It's eyes turned red, like when it was hit as a wolf, and its fur turned red too. I exited the game, and when I went back on the wolf was tamed and it's colors were normal. I tamed several more and it did not happen again. I flew over to a different place, the tamed wolves following me, and there was a sheep there. The wolf (I think it was the same one) turned completely red again and killed the sheep. I did not hit the sheep before going over there. Every time the wolf, which was tamed, came near a sheep, its eyes and fur turned red and it attacked the sheep. I spawned a sheep near it and it kept happening. I'm not sure why it is doing this. I do not know how to reproduce the issue, as I tried several times. Later, I changed the color of the collar and it turns to whatever color the collar is. Thank you.