1. A group of steroid lactones (conjugates of bufagins and suberylarginine at C-3) of digitalis present in the venoms of toads (family Bufonidae); their effects are similar to but weaker than those of the bufagins.
2. Specifically, the main toxin of the European toad (Bufo vulgaris).
References in periodicals archive ?
These include bufotoxins and larval skin extracts with antipredatory functions, which evoke alarm responses in toad tadpoles.