Here's common knowledge:
The back of a long haired man and a long haired dog side-by-side; you wouldn't be able to tell who was who or which was which. Align Drump'f's hair alongside a Labrador Retriever. That's a start; that's common knowledge. When you wear that fake hair on your head, you become dogs' best friend, for real!! Throw in a couple other animals for good measure. Any other you name, will do. All the four-legged animals of the planet have STRAIGHT hair with the exception of the sheep and some poodles. I don't mind falling into the "poodle" category.