YOU SAID:

I have 2 kittens but my brother hates cats an prefers dogs

INTO JAPANESE

私は2匹の子猫を飼っていますが、兄は猫が犬を好むのが嫌いです

BACK INTO ENGLISH

I have two kittens, but my brother doesn't like cats.

INTO JAPANESE

私は子猫を2匹飼っていますが、兄は猫が好きではありません。

BACK INTO ENGLISH

I have two kittens, but my brother doesn't like cats.