Hello all. I noticed a few days ago that one of my chins, Bear, seems to be missing a finger. I have been monitoring it since and cleaning and applying neosporin. He is in a cage with my other chin, Buttons - the two have been raised together since they were young. The only thing I can find online is that this happens from fighting, but I really don't think the two fought because Bear is still cuddling up to Buttons and isn't afraid of him at all. The injury doesn't seem to be bothering him too much, just a little bit, but I'm still concerned since I don't know how this happened. There has been no blood and no sign of the missing finger. I think he must have got it caught. I figured there was a possibility that my older chin in a separate cage, Apollo, may have nibbled his foot, but it seems unlikely. What do I do about this? I could really use some advice, I want him to be healthy and safe of course. A photo of what it looks like is attatched.