I have a burning hatred toward my girlfriend's dog.
Why hate the dog?
When I came out of the room, a huge dog was staring at me and it freaked me out.
That must have been scary. You don't have to like your girlfriend's dog if you don't want to. You should talk to her about it, though.
I'm going to kick it.
Don't do that if you want to stay with her. Best to try to get used to the dog being around you.