Toad is a common name for certain frogs, especially of the family Bufonidae, that are characterized by dry, leathery skin, short legs, and large bumps covering the parotoid glands. A distinction between frogs and toads is not made in scientific taxonomy, but is common in popular culture ( folk taxonomy), in which toads are associated with drier, rougher skin and more terrestrial habitats.

List of toad families

In scientific taxonomy, toads include the true toads (Bufonidae) and various other terrestrial or warty-skinned frogs. Non-bufonid "toads" can be found in the families: * Bombinatoridae (

fire-bellied toads fire-bellied toads are a group of six species of small frogs (most species typically no longer than ) belonging to the genus ''Bombina''. The name "fire-bellied" is derived from the brightly colored red- or yellow-and-black patterns on the toa ...

and jungle toads) * Calyptocephalellidae ( helmeted water toad and false toads) * Discoglossidae ( midwife toads) *

Myobatrachidae Myobatrachidae, commonly known as Australian ground frogs or Australian water frogs, is a family of frogs found in Australia and New Guinea. Members of this family vary greatly in size, from species less than long, to the second-largest frog ...

(Australian toadlets) *

Pelobatidae The European spadefoot toads are a family of frogs, the Pelobatidae, with only one extant genus ''Pelobates'', containing six species. They are native to Europe, the Mediterranean, northwestern Africa, and western Asia. Description The Europe ...

(

European spadefoot toad The European spadefoot toads are a family of frogs, the Pelobatidae, with only one extant genus ''Pelobates'', containing six species. They are native to Europe, the Mediterranean, northwestern Africa, and western Asia. Description The Europ ...

) *

Rhinophrynidae The Rhinophrynidae are a family of frogs containing one extant genus, the monotypic '' Rhinophrynus'', and a number of fossil genera. The family is sometimes known as the Mexican burrowing toads or simply burrowing toads. ''Rhinophrynus'' occur ...

( burrowing toads) * Scaphiopodidae (

American spadefoot toads The Scaphiopodidae are a family of American spadefoot toads, which are native to North America. The family is small, comprising only seven different species. The American spadefoot toads are of typical shape to most fossorial (or burrowing) fro ...

) *

Microhylidae The Microhylidae, commonly known as narrow-mouthed frogs, are a geographically widespread family of frogs. The 683 species are in 63 genera and 11 subfamilies, which is the largest number of genera of any frog family. Evolution A molecular phylo ...

( narrowmouth toads)

Biology

Usually the largest of the bumps on the skin of a toad are those that cover the parotoid glands. The bumps are commonly called warts, but they have nothing to do with pathologic

wart Warts are typically small, rough, hard growths that are similar in color to the rest of the skin. They typically do not result in other symptoms, except when on the bottom of the feet, where they may be painful. While they usually occur on the ...

s, being fixed in size, present on healthy specimens, and not caused by infection. It's a myth that handling toads causes warts. Toads travel from non-breeding to breeding areas of ponds and lakes. Bogert (1947) suggests that the toads' call is the most important cue in the homing to ponds. Toads, like many amphibians, exhibit breeding site fidelity (

philopatry Philopatry is the tendency of an organism to stay in or habitually return to a particular area. The causes of philopatry are numerous, but natal philopatry, where animals return to their birthplace to breed, may be the most common. The term derive ...

). Individual

American toad The American toad (''Anaxyrus americanus'') is a common species of toad found throughout Canada and the eastern United States. It is divided into three subspecies: the eastern American toad (''A. a. americanus''), the dwarf American toad (''A. a ...

s return to their natal ponds to breed where they are likely to encounter siblings as potential mates. Although inbred examples within a species are possible, siblings rarely mate. Toads recognize and avoid mating with close kin. Advertisement vocalizations given by males appear to serve as cues by which females recognize kin. Kin recognition thus allows avoidance of inbreeding and consequent

inbreeding depression Inbreeding depression is the reduced biological fitness which has the potential to result from inbreeding (the breeding of related individuals). Biological fitness refers to an organism's ability to survive and perpetuate its genetic material. ...

Habitat

In the United Kingdom

common toad The common toad, European toad, or in Anglophone parts of Europe, simply the toad (''Bufo bufo'', from Latin ''bufo'' "toad"), is a frog found throughout most of Europe (with the exception of Ireland, Iceland, and some Mediterranean islands), in ...

s often climb trees to hide in hollows or in nest boxes.

Cultural depictions

Kenneth Grahame Kenneth Grahame ( ; 8 March 1859 – 6 July 1932) was a British writer born in Edinburgh, Scotland. He is most famous for ''The Wind in the Willows'' (1908), a classic of children's literature, as well as '' The Reluctant Dragon''. Both books w ...

's novel ''

The Wind in the Willows ''The Wind in the Willows'' is a children's novel by the British novelist Kenneth Grahame, first published in 1908. It details the story of Mole, Ratty, and Badger as they try to help Mr. Toad, after he becomes obsessed with motorcars and gets ...

'' (1908), Mr. Toad is a likeable and popular, if selfish and narcissistic, comic character. Mr. Toad reappears as the lead character in

A. A. Milne Alan Alexander Milne (; 18 January 1882 – 31 January 1956) was an English writer best known for his books about the teddy bear Winnie-the-Pooh, as well as for children's poetry. Milne was primarily a playwright before the huge success of Winni ...

's play ''

Toad of Toad Hall ''Toad of Toad Hall'' is a play written by A. A. Milne – the first of several dramatisations of Kenneth Grahame's 1908 novel ''The Wind in the Willows'' – with incidental music by Harold Fraser-Simson. It was originally produced by Will ...

'' (1929), based on the book. In Chinese culture, the Money Toad (or Frog)

Jin Chan The Jin Chan (), also called Chan Chuy () or "Zhaocai Chan Chu" (), is most commonly translated as "Money Toad" or "Money Frog". It represents a popular feng shui charm for prosperity. This mythical creature is said to appear during the full moon ...

appears as a Feng Shui charm for prosperity.

References

External links