YOU SAID:

He has three dogs but one is white while the rest are brown

INTO JAPANESE

彼は3匹の犬を飼っていますが、1匹は白で、残りは茶色です。

BACK INTO ENGLISH

He has three dogs, one white and the rest brown.

INTO JAPANESE

彼は3匹の犬を飼っています。1匹は白、残りは茶色です。

BACK INTO ENGLISH

He has three dogs. One is white and the rest are brown.

INTO JAPANESE

彼は３匹の犬を飼っている。 1つは白で、残りは茶色です。

BACK INTO ENGLISH

He has three dogs. One is white and the rest are brown.