Ans. There’s an unstable glucoside ranunculin present in all the varieties of buttercups. If you wound a buttercup anyhow, the glucoside breaks down into a toxin named protoanemonin and glucose. If any animal consumes the flower or any other part of the plant, it can blister the mucous membrane in them. This can happen mostly to horses and cattle. There are some other effects of this poisoning. It includes diarrhea and excessive salivation.