Companion Animal Welfare

Companion Animal Welfare: Guinea Pig Dental Disease

Dental disease is extremely common in guinea pigs and is a leading cause of welfare-compromising weight loss and pain, requiring regular veterinary dental monitoring.

Key Facts

Guinea pigs have continuously growing hypsodont teeth that require constant wear from fibrous food
Malocclusion causes overgrown molars and premolars that trap the tongue and impair chewing
Dental disease signs include weight loss, drooling, reduced appetite and preference for soft food
Diagnosis requires general anaesthesia for a full examination as the cheek teeth are not visible externally
High hay diet (minimum 70-80% of intake) is essential for adequate dental wear

Welfare Considerations

Dental disease in guinea pigs causes severe pain and starvation through inability to prehend and chew food. The condition is rarely caught early because the affected teeth are not visible without full anaesthesia. Weight monitoring weekly and prompt veterinary assessment for any weight loss are the most important welfare-protective monitoring actions for guinea pig owners. Hay-based feeding that minimises concentrate intake supports dental health throughout life.

What You Can Do

Provide unlimited hay as the foundation of your guinea pigs diet
Weigh guinea pigs weekly - early weight loss is often the first sign of dental disease
Seek veterinary assessment promptly if your guinea pig shows weight loss or reduced appetite
Schedule annual dental assessments with a vet experienced in exotic small mammal dentistry