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Rabbit in buttercups

Buttercups are on many lists of poisonous plants. They contain an irritant that can cause dermatitis in humans that handle buttercups and salivation, oral ulceration and gastrointestinal irritation in animals that eat them. Buttercups have a bitter taste and are not a problem for rabbits. They can eat small, young leaves that are growing in pastureland without ill effects. The mature leaves, tall plants and flowers unpalatable to rabbits so they do not eat them.