My 13 month old jack russell( thats what my vet thinks she is, but she stands bigger than the one on here, but looks exactly like it in the face) goes for the neck of my other animals when they play. I'm afraid she may get too rough in the future. Sh...

I think I have a jack russell but not for sure. She stands a little taller than the one in the picture but looks exactly in the face. She always jumps at people(even me) bouncing off of us. Nipping and she is always bitting my oldest dog(a dotson) on...