How is the human hair different from animal hair?

The dog hair is clearly thicker. It appears to have a diameter of ~30µm while the human hair is ~25µm thick. The segments of the dog hair appear to be smaller. They appear to be about 10µm while the human hair is ~15µm. Also the human hair appears to have more uniform segments than that of the dog hair. The human hair has higher roughness of 2.398 µm, while the dog hair has a roughness of 618.3 nm.

Source: www.asylumresearch.com/Humanvsdog.ppt