What king of covering does a dog have?

Dogs have fur, which is a type of hair.

While we often call it "fur," it's actually a specialized type of hair with unique characteristics like:

* Density: Dogs have varying densities of fur depending on their breed and climate.

* Length: From short and smooth to long and fluffy, dogs have a wide range of fur lengths.

* Texture: Fur can be soft, wiry, coarse, or even silky.

* Color: Fur can come in a multitude of colors and patterns, from solid black to multi-colored patches.

So, to answer your question directly: dogs have fur (hair) as their covering.