Here's an animal question for y'all

I don't feel like writing about what's going wrong on in the rest of the world today.

I'm watching the dogs play.
As you may know, we have the white Hefalump and the black wiggler.
I'm sure they know which paw is theirs, so they don't bite it.

They may be aware that the other isn't the same as themselves.

The question is: Do they KNOW that they are black and white?
Would they notice if they changed colors?