YOU SAID:

if I get 300 likes I get a dog

INTO JAPANESE

300いいねをもらうと犬を飼う

BACK INTO ENGLISH

300 Likes and keeps a dog

INTO JAPANESE

300犬を好きで飼っている

BACK INTO ENGLISH

I like 300 dogs

INTO JAPANESE

私は300匹の犬が好きです

BACK INTO ENGLISH

I like 300 dogs