I want to kick a dog
Why would you want to do that to a dog?
Because I'll feel much better when I see it hurt
That's a horrible thing to say!  I'd understand doing it in self defense, but random acts of animal cruelty are never acceptable.  You need to get some professional help if you feel that way often!
I do feel like I want to kick him all the time.
I am sorry that you feel like that all the time. You should definitely seek help so that you can feel better without doing animal cruelty.