Frogs are amphibians, and of the [[Anura]] family as [[Toads]] are. A group of frogs is an army. Surprisingly, frogs cannot actually vomit; instead they expel their entire stomach and swallow it again! Males have a unique call to attract females. Frogs <strong>cannot</strong> actually grow back legs, but scientists have used drugs to help [https://www.smithsonianmag.com/smart-news/frogs-regrow-lost-legs-in-breakthrough-experiment-180979483/ grow them back].