YOU SAID:

My brother likes to pet cats because he is a dog.

INTO JAPANESE

私の兄は犬なのでペットを飼うのが好きです。

BACK INTO ENGLISH

My older brother is a dog, so I like to keep pets.

INTO JAPANESE

私の兄は犬なので、ペットを飼うのが好きです。

BACK INTO ENGLISH

My brother is a dog, so I like to keep pets.

INTO JAPANESE

私の兄は犬です、それで私はペットを飼うのが好きです。

BACK INTO ENGLISH

My brother is a dog, so I like to keep pets.