Anal Glands are a glandular sac located on each side of the anus. Groomers perform an external gland expulsion whereas veterinarians perform both external and internal expulsions. If these glands are not expressed your pet can develop impacted anal glands or infection. These must be expressed regularly. A pet can signal anal gland problems by scooting their bottoms across the floor, excessive licking and biting the tail area and circling. If you suspect problems with your pets anal glands see your veterinarian.