My mom and I are constantly fighting she's a rat and in a tiger what could help so we don't fight?

I think communication is very important between you. Both of you need know how the other thinks and try to handle everything peacefully.
For me, I quarreled a lot with my mom when I was in high school. Then I tried my best to understand her and do something good for her. Later things turn better and now we share almost everything with each other.