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Ridges growing out after dietary change

This young Lionhead rabbit was adopted because he had spent his life confined to a hutch with a diet of muesli mix. The incisors were ridged when he was adopted. The ridges are a sign of the progressive syndrome of acquired dental disease (PSADD) and are thought to be due to insufficient calcium in the diet to form sufficient enamel on the continually growing teeth. After six weeks in the garden during the day, with a diet of leafy green plants and vegetables, the ridges started to grow out because there was enough calcium in the diet to supply the continually growing teeth. The rabbit never ate hay.