According to some, the sight of a frog may be a bad omen. As well, a common myth says that touching frogs and toads may give one warts. (In many other cultures, frogs are considered a good omen.) A survey carried out by researchers from the Johannesburg Zoo have shown that in modern times old superstitions play a less significant role and modern children are more concerned whether frogs are poisonous or harmless.

Phobia against frogs often happens after seeing frogs die violently. One case of severe fear of frogs has been described in "Journal of Behavior Therapy and Experimental Psychiatry" in 1983: a woman developed an extreme fear of frogs after a traumatic incident in which her lawn mower ran over a group of frogs and killed them.