Re: Bleeding Anus
Well, you have to remember that those tissues are very delicate. A fingernail, and esp. a hard, unyielding object (like a hair brsuh) risks injury. Any time there's 'red' there's injury, the amount usually correlates with the severity. Take it as a message that you need to be careful and restrain your curiosity.
The thing you need to watch out for is infection (a cut is a pathway for that), and, of course, more bleeding. If you develop either (a fever, more bleeding), call a doc ASAP.