Hello. I am really scared and curious, but I really want to know if it is normal to have hair (growing hair) in the anus?
Men can and do grow hair over all of their bodies, including the crack between your buttocks where your anus is at. The only exception to the rule is that you don't grow hair on the palms of your hand or the soles of your feet. In many areas the hair is fine and hard to see, but as you age many hairs become thicker and longer.
Having hair between your buttocks does serve a purpose. It keeps the two sides from rubbing together and irritating each other. However, it also causes an problem wiping yourself clean after having a bowel movement. It is just something you learn to live with.