What are the differences between dog fur and hair, and how can you distinguish between the two?

Dog fur and hair are both made of the same protein, but they have different textures and purposes. Fur is typically shorter, denser, and softer, while hair is longer, coarser, and serves more of a protective function. To distinguish between the two, you can look at the texture and length of the coat. Fur is usually softer and shorter, while hair is longer and coarser.