Why is iceberg lettuce bad for rabbits?
A rabbit’s diet is a pyramid with hay at the base: roughly 80% grass hay, 10–15% leafy greens, and a small daily pellet portion (House Rabbit Society model). Anything outside that pyramid is a treat — and sugar is the enemy of the gut flora that keeps a rabbit alive.
Iceberg lettuce is mostly water with little nutrition, and it contains lactucarium, which can be harmful in quantity. It also fills a rabbit up without the fiber or nutrients leafy greens provide.
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Can rabbits eat iceberg lettuce?
Skip iceberg lettuce entirely — it is the first item on the HRS do-not-feed list.
What happens if a rabbit eats too much iceberg lettuce?
Iceberg lettuce is mostly water with little nutrition, and it contains lactucarium, which can be harmful in quantity. It also fills a rabbit up without the fiber or nutrients leafy greens provide.