Etiology: Hairballs can form in the stomach when hair is ingested as a result of grooming or nest-building behavior.
Incidence: Gastric hair masses are an incidental finding in about 25% of rabbits.
Clinical Signs: Generally, hairballs are not a problem. In cases where there is a large, organized hairball, rabbits may become anorexic due to gastric/intestinal stasis.
Diagnosis: Palpation of a gastric mass and/or contrast radiography may be used to diagnose a hairball.