Can Hedgehogs Eat Cheese? (Never)

Hedgehogs, like most adult mammals (and roughly 65% of adult humans), produce very little lactase — the enzyme needed to digest milk sugar. Cheese, milk, yogurt, ice cream, and most dairy products cause diarrhea, gas, and dehydration in hedgehogs. At 350–700g body weight, fluid loss from diarrhea becomes dangerous quickly.

This isn't a portion-control situation. Even small amounts of cheese reliably cause GI distress. Skip dairy entirely.

Why not

Adult hedgehogs produce very little lactase. Milk sugar (lactose) reaches the colon undigested, where bacteria ferment it — producing gas, drawing water into the gut, and causing diarrhea. The mechanism is the same as in lactose-intolerant humans, but a hedgehog's small body weight makes the consequences more serious.

The long-running myth that hedgehogs love bread and milk (still cited in some children's books) traces back to a time when European hedgehogs were sometimes 'fed' milk by gardeners. The hedgehogs ate it; many got sick. The myth persists; the practice should not.

Signs to watch for

If your hedgehog has eaten cheese or any dairy: watch for diarrhea, lethargy, refusing water, or any sign of dehydration. Diarrhea lasting more than 24 hours, blood in stool, or any sign of weakness warrants an immediate vet call. Hedgehogs dehydrate fast at their body weight.