Can Someone help me please? I can't stand this anymore?

My dad and I have never had the greatest relationship. He never really seemed to make the effort to get to know me or anything like that, and its really no big deal anymore. He scares the crap outta me. He has the worst temper ive ever seen anyone ever have. He gets it from my grandpa(my grandpas more laid back and a nice guy now, my mom said he became that way when I was born). The littlest things make him mad. He ed me once with a lincoln log because I tripped and fell on his foot(which, yes, was a total accident). He punched a hole in the wall one time when my sister(she was 4 at the time, shes 5 now) and brother(7 at the time) were arguing(verbally). Those are just a few of the things. He also prefers partying to caring for my mom brother sister and I. one time I fell asleep in his room(my parents don't sleep in the same room) watching tv and he came home at 3 in the morning reeking of alcohol and started cussing at me. He also called me and my brother fat and chunky(i am 13, 5' 3", and about 115 lbs so yeah i realize i could loose some weight but he didnt have to be mean like that). This is exactly what he said "You two are so fat and chunky" and then I was hoping he was kidding so I looked at him and said "oh that wasnt nice" and he said "you know what kid? sometimes the truth hurts". Whenever my mom leaves to go do errands I try to go with her but sometimes I cant so I have to stay with my dad, but sometimes that just doesn't work. I have thought about calling child services, but I am afraid that they won't find anything wrong since I don't have any evidence (besides pictures of the hole in the wall, and if needed videos/audio clips of him yelling) and that would make him even more mad than he is now... Is there anything I could do legally to get him to stop? Anything whatsoever? I have also thought about 'disowning' my parents, but I love my mom to death.