Is it safe for rabbits to eat iceberg lettuce?

Rabbits should not eat some lettuces (such as iceberg) as they contain a substance called laudanum which can be harmful in large quantities. RSPCA: Rabbit Diet Myths. But this is disputed because . Lettuce does not contain laudanum. Edible lettuce does contain a chemical called lactucin which is a component of lactucarian. read more

Darker, more leafy and fibrous varieties (e.g. romaine lettuce) should be fed, as they are higher in fibre and actual nutrients. Introduce gradually to avoid digestive problems. Large amounts of lettuce, for a rabbit unused to it, can cause digestive upsets. Myth #4 - Rabbits should be fed big bowlfuls of commercial food. Eating too much commercial food (pellets/nuggets/muesli) can cause weight gain and prevent eating enough hay and/or grass. read more