That's horrible, that certainly wouldnt fly at my house.

Having said that it is YOUR house, your house, your rules.

It's unfortunate it couldnt be done in such a way that everyone was calm, but I probably would have lost it myself, I dont know many people that wouldnt.

There is absolutely no need for cruelty to any living thing in my book, and this was intentional, as it seems you've had words about that in the past.

IMO he acted badly and your mom only went along with perhaps because she has to live with him. I hope they dont have any animals or if they do he doesnt treat them the same way.

Hopefully when things calm down you can straighten it out once and for all, which as suggested previously a letter, to begin with (if you even want to) then follow up however appropriate after that.

It amazes me that some people never learn respect, and in your home you deserve respect as do your pets.