The anal glands or anal sacs are small glands near the anus in many mammals , including dogs  and cats. They are paired sacs on either side of the anus between the external and internal sphincter muscles. Sebaceous glands within the lining secrete a liquid that is used for identification of members within a species. These sacs are found in many carnivorans , including wolves ,  bears ,   sea otters  and kinkajous.
THE EXPRESSION CONTROVERSY
Anal gland impaction in dogs: treatment & prevention
What are Anal Glands? The anal glands are small sacs with ducts which lead to the exterior. The lining of these sacs contains numerous modified sebaceous glands that produce a foul-smelling anal sac secretion. In the normal dog, this secretion is squeezed out a little at a time, as the animal defecates, on the surface of the faeces and acts as a territorial marker. The anal gland sacs are located under the tail either side of the rectum. If the anal glands are not expressed correctly they can become impacted, making bowel movements difficult, painful and can lead to infections or abscesses. Impactions usually occur in small dog breeds and overweight dogs.
Expressing Anal Glands: The Good, the Bad and the Disgusting
To sustain this free service, we receive affiliate commissions via some of our links. Our review process. If not taken care of immediately, blocked anal glands can lead to a severe infection.
At Asspressions, we've heard it all:. If anal glands are allowed to become too swollen and impacted, they could rupture. This poses a serious health risk for your dog, and surgery may be the only option left to fix the problem. Expressing anal glands remains a controversial practice with many different opinions.