Opt instead for Romaine, Endive, Red Leaf or Green Leaf varieties. These will be easier on your bunny s digestive system and will provide nutrients that Iceberg lettuce lacks. Field Mixes are also appropriate, as long as they do not include Iceberg. In addition to the many lettuce varieties, bunnies also enjoy a wide assortment of other types of greens. Collard greens are a popular choice as are Bok Choy and Spinach.
Dandelion greens are often a huge hit.
Green, leafy carrot tops are another huge favorite. You may even find some tops discarded among the carrot bunches, left behind by a non-bunny person more interested in the carrots themselves. Mustard greens and Turnip greens and other such items are equally appropriate for bunnies, though some bunnies simply cannot stand them. I have had the experience of having bunnies who hate mustard greens so much that they would not touch their salads at all until I removed the offending item. Rabbits can be very particular about their meals and are not afraid to send them back to the kitchen for corrections.