Now, this isn't funny. It's for posterity.
Trevor kicked Socks yesterday. He kicked her hard with his shoe on. Later he said it was because she scratched him. He has been acting afraid of her lately, and I have to shut his door at night because "my kitty will come in and botter me" he says.
I nagged him for about 30 minutes, and I brought it up later a few times, too. I don't think it will happen again.
I should learn from this. I think he really understands how disappointed I was. We talked about how he felt and how I felt and how Socks felt. Somehow, I have to start having the same conversations with him when he knocks Devin over.