How is the human hair different from animal hair?

Answer 1

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

Answer 2

Animal hair, also known as fur, and human hair are both essential to the host creatures' environmental comfort and temperature regulation. However, the composition and structure of the two hair types are distinctly different.GrowthHuman hair grows and sheds continuously. Its length and style are maintained through regular haircuts. Most animal hair, in contrast, in self-limiting and sheds seasonally. Its length is regulated biologically, meaning that it grows to a specific length, determined genetically, and then ceases to grow.IndentificationAccording to Web MD, strands of human hair carry chemical information which is specific to an indivudual, and which can be used for indentification. Animal hair, however, is indistinct, meaning that hair from two different animals of the same breed have no distinct difference, and cannot be used to identify an individual. In either case, according to the FBI, genetic information can only be accessed if the hair follicle is still attached to the root of the hair.LayersHuman hairs are all the same type of strand. Many animals, however, have two distinct layers of fur made up of hairs with different properties. The top layer is long and coarse, and the undercoat is short and fine. This two-layer coat type helps animal coats repel water, and protects the skin from extreme temperatures.SpecializationMany animals have specialized hair types that serve specific biological functions. For example, whiskers are a specialized hair which are connected to the nervous system, and which receives sensory information. They affect an animal's balance, sense of direction and depth perception. Similarly, porcupines and hedgehogs have modified hair strands called quills or spines, which act as defense mechanisms.

Answer 3

human hair is on a person, dog hair is on a dog :)

Answer 4

Well, human hair is usually attached to a human, while rabbit hair tends to only grow on rabbits. Though this isn't always the case, it's the most common difference between the two.

Answer 5

dog hair is soothing curly or straight like a human but the speed in which it grows is different.