YOU SAID:

My dog has a spot on his back in the shape of a snowman

INTO JAPANESE

私の犬は雪だるまの形をした背中に斑点がある

BACK INTO ENGLISH

My dog has a speckle on his back in the shape of a snowman.

INTO JAPANESE

私の犬は雪だるまの形をした背中に斑点があります。

BACK INTO ENGLISH

My dog has spots on his back in the shape of a snowman.

INTO JAPANESE

私の犬は雪だるまの形をした背中に斑点があります。

BACK INTO ENGLISH

My dog has spots on his back in the shape of a snowman.