To be safe, don't feed your rabbit anything that isn't recommended for rabbits. See the related question below for more details about a healthy rabbit diet.
If you want to feed your rabbit a new plant, always check unknown plants against a list of poisonous plants for rabbits (there are a few on the web -- one is linked below). Do research online to see if the plant is recommended for rabbits. If you decide to give it to your bunny, start off with tiny amounts, and watch the rabbit's health for bad reactions (diarrhea, gas, pain, etc).
Rabbits cannot eat the following:
About treats: Rabbits can have many fruits and vegetables as a treat -- like cucumber, carrot, tomato, apple -- but too much of these foods will make them sick. The House Rabbit Society recommends no more than 2 tablespoons of fresh treat food per day for a normal, healthy 6 pound rabbit.
About lettuce: Lettuce has natural compounds that can give rabbits diarrhea and make them seriously ill. Light-coloured and white lettuces contain these compounds most (like iceberg lettuce); also, light-coloured plants don't have nutritional value for rabbits, so they should be avoided. Dark-coloured lettuces (like the dark adult leaves of Romaine, Green Leaf, Red Leaf) are good for rabbits in moderation: they can be included in the rotation of "salad" greens but shouldn't be offered every day. Rabbits in the wild can eat lettuce because they are also free to eat herbs and minerals that counteract the lettuce's effects; you can mimic this diet with a rotation of herbs, weeds, and other greens in your rabbit's salad. Dark lettuces are less likely to give the rabbits diarrhea but some people say why risk it when there are so many things you can feed them?
More Information about What Rabbits Can and Can't Eat
Bunnies love, radicchio, endive, dutch carrot tops (occasionally), silver beet, spinach (occasionally), basil, parsley, collard greens, mint, mustard greens, , cilantro, mint, strawberry leaves, raspberry leaves, wheat grass, and dandelion leaves and flowers.
They need a good mixture of those veggies fed in relation to their weight. About 1.5 cups of vegetables per kilogram of body weight each day. Only a small amount of pellets, about three tablespoons. Ignore anyone who says rabbits need tonnes of pellets : my vet says no to pellets. They will make your rabbit fat and sick if you give too much. And they need unlimited timothy or oaten hay.
Also grass gives them gas, and rabbits can't fart or burp, so too much grass is a bad thing. Domestic rabbits are nothing like wild rabbits, as they've evolved differently. And rabbits do need to be protected from poisonous things as they do not know whether something is poisonous or not. They test their environment with their teeth. And of course, always have lots of clean fresh water for your bunny. And no iceberg lettuce! It gives them diarrhea.
As treats small amounts of fruits like strawberries, apples (but not the seeds, which are poisonous), Pears, cherries, blueberries, grapes and bananas. Definitely not too much, because sugar is bad for rabbits and can make them really sick. Fruit and pellets are junk food for bunnies!
Acid fruits, like tomato, orange, mandarin, and pinapple. They love apples and of course carrots. You can give them pretty much all vegetables.
[edit] Rabbits actually can eat pineapples and Oranges. The acidity will clears up any hairballs they may get, considering rabbits cannot throw up. However, they should only eat it in small amounts
Some things rabbits can't eat (this is NOT a complete list! To keep your rabbit safe and healthy, think not about what they can't eat, but what they CAN eat. See the related question, linked below, for more information):
Amaranth
Arrowgrass
Bracken fern
Bromweed
Buckeye
Burdock
Castor beans
Cherry leaves
Chinaberry
Chokecherry leaves or pits
Comfrey - Personal note: some folks feed this with no problems.
Fireweed
Foxglove
Goldenrod
Hemlock, poison/water
Horehound
Jimson weed
Johnson grass
Larkspur
Laurel
Lupine
Mesquite
Milkweed - personal note: yet wild bunnies have been known to eat this no probs.
Miner's lettuce
Moldy bread, moldy anything
Oak
Oleander
Pigweed - personal note: mine will eat the young leaves, they leave the stalk and older leaves
Poppy
Potato leaves, sprouts, or peels
Rhubarb leaves
Soybeans or soybean vines
Sweet clover - personal note - what's wrong with clover?
Tarweed
Tomato leaves
Yes. Here in Montana it is very common to see a weasel chasing a rabbit. They will eat them. Weasels are vicious and just as fast as rabbits.
No, they do not. Rabbits only eat carrots and other plants. They are herbivores.
Because hawks eat rabbits
A cats natural instinct is to hunt and therefore, the answer is yes. The cat will eat the rabbit. However, there have been some cases where a cat that has been raised around rabbits will not attack one. If your cat is not familiar with rabbits I would not bring one around him/her.
Rabbits are herbivores. The only living thing rabbits eat are plants. See the related question below for more details about what rabbits eat.Other AnswersSome female rabbits will need to eat meat before they have babies because they need the protein and if they don't get it they will eat their babies.I've never heard of that before. It is definitely not recommended to feed your rabbit meat, ever, even pregnant rabbits. Rabbits are herbivores and can't digest meat properly.
yes!foxes do eat rabbits
Man (carnivores) may eat rabbits, but rabbits (herbivores) eat plant life.
The impala is herbivorous; it does not eat rabbits.
rabbits don't eat animals they are vegetarian's.
rabbits can not eat lemons.Lemons are to sour for rabbits.
it is rabbits
Rabbits are herbivores and do not eat other rabbits! They only eat plant material, fruit, pellets, and vegetables.
No rabbits eat their feces, although all rabbits eat cecotropes. Rabbits have two kinds of droppings: feces, and cecotropes. Baby rabbits that aren't weaned yet eat their mother's cecotropes; once they're weaned, they eat their own cecotropes.
Full-grown rabbits are rather large for most snakes, but many snakes will prey on baby rabbits, and some of the larger snakes can eat adult rabbits.
rabbits and humans eat carrots.
food chain
No, rabbits are vegetarians, they don't even eat bugs.