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.
1 Internal hemorrhoids involve the veins inside your rectum. 2  You can't feel pain on the inside of your rectum, so you may not feel pain from an internal hemorrhoid. 3  You may get bleeding or you may feel a fullness in the rectum, like you need to have a bowel movement.ee your doctor if you notice bleeding to make sure the cause is hemorrhoids and not colitis, cancer or some other disease. Bleeding from your rectum or anus or bloody stools may be a sign of something more serious such as cancer. Your doctor may be able to diagnose hemorrhoids just by examining you.