brown tree snakes are nocturnal. most of Guam's native forest birds are not. explain how this has affected both the snakes and the birds. The snakes easily find and kill the sleeping birds, and the snakes success has allowed them to reproduce quickly.
A person may have both internal and external hemorrhoids. Symptoms of hemorrhoids include occasional throbbing pain, itching, burning sensation, bright red blood on toilet paper or stool, or a lump of soft tissue protruding outside of the anus.
Hemorrhoids do not always hurt. In fact, you may have hemorrhoids that you can't see or feel and that only cause painless bleeding when they're aggravated. Sometimes, however, external hemorrhoids-hemorrhoids around the anus-can collect excess blood and form a clot, which can be very painful.emorrhoids do not always hurt. In fact, you may have hemorrhoids that you can't see or feel and that only cause painless bleeding when they're aggravated. Sometimes, however, external hemorrhoids-hemorrhoids around the anus-can collect excess blood and form a clot, which can be very painful.