How Do Abscesses in Rabbits Differ from Other Animals?

How Do Abscesses in Rabbits Differ from Other Animals?
Generally, an abscess is the body's response to a bacterial infection in various tissues, such as the skin or tooth roots. The body sends white blood cells to eliminate and engulf bacteria and dead cell debris through a process called phagocytosis. However, rabbit abscesses are completely different from those found in dogs and cats: they are thick, sticky, and resemble cream cheese, rather than being runny or liquid.

This occurs because the rabbit's immune response primarily dispatches a type of white blood cell called heterophils to engulf bacteria and cellular debris, whereas dogs and cats rely more on neutrophils. Because heterophils lack a specific lysosomal enzyme called myeloperoxidase, they cannot digest dead cells into liquid pus. Furthermore, these pus nodules are often enclosed within a tough fibrous capsule, making it highly difficult for antibiotics to penetrate and destroy the bacteria. Therefore, treating rabbit abscesses requires proper and precise management to achieve a complete cure.

Case Study: In this case, a rabbit suffered from an infected abscess wound caused by a bite. It had been treated multiple times without healing, and the abscess kept recurring. The veterinarian found several pus nodules scattered under the skin, each with a clearly defined capsule boundary. Since previous lancing and draining had failed to permanently resolve the issue, the vet decided to surgically excise all the abscess nodules completely, alongside administering appropriate antibiotics.

Due to the specific differences among various exotic pets, understanding their unique physiological processes is crucial.

Article by: Dr. Punyaporn Kruawaengmon, DVM