It is a dog with black spots.

它是一只长着黑色斑点的狗。

youdao

The dog has a big, black spot on his back.

这只狗背上有一个很大的黑色斑点。

youdao

Toto was a little black dog, with long silky hair and small black eyes that twinkled merrily on either side of his funny, wee nose.

托托是一只小黑狗，它有着丝绸一样的长毛，在它那令人发笑的小鼻子上边长着一双黑溜溜的、愉快地眨动的小眼睛。

youdao

The fight took place in Louisiana between a local dog, Black, owned by a man named L.G.

NEWYORKER: Offensive Play

He admitted manslaughter on the grounds of diminished responsibility, having become convinced his victim had turned into a black dog.

BBC: Philip Whiteman hospital escape to be reviewed

Mark Madoff appears to have hung himself in his upscale Manhattan apartment with a black dog leash and was discovered Saturday morning by his father-in-law.

FORBES: Ponzi Saga Continues With Mark Madoff's Suicide