What bone makes dogs noses go black?

There isn't a specific bone that makes a dog's nose black. The color of a dog's nose is determined by the amount of melanin present in the skin, just like with human skin.

Here's a breakdown:

* Melanin: This is a pigment that gives color to skin, hair, and eyes.

* Nose Pigment: Dogs with more melanin in their nose skin have darker noses, often black.

* Genetics: The amount of melanin a dog produces is determined by their genetics.

So, while there's no "black nose bone," it's the pigment in the skin of the nose that creates the dark color.