|European fire-bellied toad (Bombina bombina)|
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. 
In scientific taxonomy, toads are found in the families Bufonidae, Bombinatoridae, Calyptocephalellidae, Discoglossidae, Myobatrachidae, Pelobatidae, Rhinophrynidae, Scaphiopodidae and Microhylidae. 
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 warts, being fixed in size, present on healthy specimens and not caused by infection. [ unreliable source?] 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). Individual American toads return to their natal ponds to breed where they are likely to encounter siblings as potential mates. Although inbred examples within a species is 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.
In Kenneth Grahame's novel The Wind in the Willows (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's play Toad of Toad Hall (1929), based on the book.  
- "toad". The American Heritage Dictionary of the English Language. Houghton Mifflin Harcourt. Retrieved 6 October 2016.
- "toad | amphibian". Encyclopedia Britannica. Retrieved 2017-05-23.
- "Toad". Dictionary.com, LLC. Retrieved 29 May 2012.
- "Anura, Taxonomic Serial No.: 173423". ITIS Report. Integrated Taxonomic Information System. Retrieved 20 April 2012.
- Ray, Crystal. "Do Toads Really Cause Warts". Yahoo!. Archived from the original on 29 July 2014. Retrieved 29 January 2013.
- "American Toad". psu.edu.
- Waldman B, Rice JE, Honeycutt RL. Kin recognition and incest avoidance in toads. Am. Zool. 1992. 32:18-30.
- "The Big Read Top 200". BBC. April 2003. Retrieved 28 June 2016..
- Christine Paik (2002-03-19). "NPR report". NPR. Retrieved 2013-02-26.
- "Feng Shui Money Frog". Archived from the original on 1 May 2014. Retrieved 28 June 2016.
|Look up toad in Wiktionary, the free dictionary.|
|Wikimedia Commons has media related to Toad.|
- Encyclopædia Britannica. 26 (11th ed.). 1911. p. 1035. .