Anal glands are small sacs located near the anus of many animals, including dogs and cats. These glands produce a smelly fluid that is used for marking territory and communication with other animals. When an animal defecates, the pressure can help express this fluid, releasing the scent. If the anal glands become impacted or infected, it can cause discomfort and health issues for the animal. Symptoms may include excessive licking, scooting on the ground, or signs of pain. Regular veterinary check-ups can help ensure that the anal glands are functioning properly and to address any potential problems.