This may be a displacement activity related to captivity. Place sufficient feeding trays out so that all animals have a chance to eat. A dominant animal should not be able to prevent others from eating. Food should be offered twice daily. Vitamin deficiencies are common.
Injuries Cage related injuries are the most common.
Lesions on the head, fingers, hands, toes, feet, shoulders, and buttocks are most frequently encountered. Only the most severe of these require medication. Attention must, however, be given to the circumstances that induce these injuries - e.g., position of the cage, stress levels of the animal, places to hide, etc. Fighting injuries are often deep, and may require suturing. Self-mutilation results from solitary confinement, or from excessive stress levels.