I sometimes take my anger out on my dog
Why would you do that to your dog? It sounds abusive.
To him I'm a monster. I hold him down and hit him. On his pain I feel my own pains, I bite his ear till it bleeds. He stands still, his eyes closed, mouth shut.
It sounds like you might need some help! That is abuse, like extreme abuse. You should not treat animals like that, ever.
Animals are not humans and feelings are not important.
Dogs are a man's best friend and they are loyal companions. In other words, they feel emotions too. You are abusing your dog for your own gratification, and yet it still stays by your side, which is something no human would put up with.