How To Get Kitten And Cat To Get Along?

I have two cats that are 2 years old. One of them is a Siamese (grey and white) while the other one is an Abyssinian (black and white). They’re both great, but they do get into some fights when wanting to play with each other. How can I fix this problem?

How to train kitten not to chase mice? I live in small house so i cant protect my cat from any mouse or rat places.. 🙁 i need help please… What should i do??