I just had another thought on how to handle Thelmer if he bites or tries to bite/nip again.... This also works if you have a bunny who is aggressive or gets a little out of control.....

When one of my bunnies misbehaves and I'm close to him/her I will place my hand GENTLY on his head/ears/forehead and press the head to the floor and hold the head GENTLY down for about 5 seconds. In bunny language this means "I (Cathy) AM THE BOSS BUNNY, and you need to acknowledge it".

This actually works with Chocolate when she - every once in a while - gets a little too agressive with Miss Emma over their greens. And it has worked well. In fact usually for a week or so afterwards all I have to do is say her name loudly when she starts acting up and she immediately stops her bad behavior. Bunnies don't have a long memory so if she behaves for a while and then starts acting up again I have to start all over. There has been a couple of times when I've seen her start to chase Miss Emma and then she stops herself before I can holler her name.....and it's made me feel guilty!!!! Go figure!!!

Tell your mom not to give up on Thelmer. I think part of the problem is that he is still a baby and I'm guessing easily frightened. Also baby bunnies have a lot more energy (and less of an attention span, by the way) than adults. I think that bite was the exception and not the norm.

Good luck! Keep us informed of your progress with him.