How dental malocclusion in guinea pigs causes severe welfare harm and why prevention through appropriate diet is essential.
Dental disease in guinea pigs is among the most prevalent and preventable welfare problems in small mammal keeping. The connection between hay intake and dental health is direct and well established - guinea pigs fed hay as their primary food source maintain appropriate dental wear and rarely develop malocclusion, while those fed pellet or vegetable-heavy diets develop malocclusion frequently. The welfare consequences of dental malocclusion are severe - affected animals experience mouth pain, difficulty eating, and progressive weight loss that if untreated leads to starvation. The solution is so simple - ad libitum hay - that widespread dental disease in guinea pigs represents a fundamental educational failure in small animal welfare communication.