YOU SAID:

So with a cat with dogs will a dogs be a cats?

INTO JAPANESE

だから、犬と猫と犬は猫になりますか?

BACK INTO ENGLISH

So, will the dog, the cat and the dog be cats?

INTO JAPANESE

だから、犬、猫と犬は猫になりますか?

BACK INTO ENGLISH

So, dogs, cats and dogs will be cats?

INTO JAPANESE

だから、犬、猫や犬は猫になりますか?

BACK INTO ENGLISH

So, dogs, cats and dogs will be cats?