The subjects of rumor and urban legend since the 1970s, psychoactive toads are toads from which hallucinogenic(幻覚を引き起こす), mind-altering(意識に影響を与える)substances such as 5-MeO-DMT and bufotenin can be derived. The presence of such substances may produce psychoactive(精神に作用する)effects in persons who smoke the toad skin or venom(毒). However, contrary to popular myth, there is no evidence that hallucinatory effects can be achieved by licking(舐める)the toads.