Our poor dog

We have a very sweet dog whose name is Sasha. She is the most laid back, gentle and lovable dog I've ever known. You wouldn't think so being that she's a mix breed of pit bull and boxer. We've had her since Taylor was a baby and she is excellent with kids especially around Carson. Sasha has put up with a lot from Carson and has never bit or nipped him. Sasha has her own chair in our house in which she spends 75% of her day sleeping in. Carson likes to sit with her or I should say ON her when she is in her chair. The dog doesn't seem to mind even when he stands up on her. Luke has a fascination with the dog too. He likes to pull himself up to a stand when she's in her chair and play with the dog's toenails. I have even seen Luke taste test the dog's tail and she just lays there puts up with it. Just this morning Sasha walked past me and had a chip clip clipped on her fur. Once again - she didn't seem to mind. We're very fortunate to have such a great dog!