California Reptiles & Amphibians

Bufo punctatus - Red-spotted Toad

(=Anaxyrus punctatus)


Click on a picture for a larger view





Range in California: Red

Dot-locality range map

Listen to this toad:


One short call


More sounds of
Bufo punctatus





Adult male, between advertisement calls, at breeding pond, San Diego County
Adult, San Diego County
Adult, San Diego County
Adult, Santa Cruz County, Arizona
Adult, Pima County, Arizona
Adult, Pima County, Arizona
Underside of adult, Pima County, Arizona
Recently-metamorphosed juvenile aprox. 3/4 inches in length ( 2cm ) Riverside County
Recently-metamorphosed juvenile, Santa Cruz County, Arizona.
Adults in amplexus, male on top, female on bottom, San Diego County
Adult male calling at night,
San Diego County
Adult male calling at night, sitting on a mat of vegetation on a small pond in San Diego County
Male and female in amplexus, with eggs on bottom of pool, San Bernardino County © Todd Battey
Red-spotted Toads lay their eggs singly. Other North American toads lay their eggs in a string. © Todd Battey
Tadpole, Riverside County
Tadpole, Riverside County
Tadpoles stranded in drying of springwater runoff. The small black patch at the bottom of the picture is the same group of tadpoles shown close-up on the right. Most of these tadpoles were still alive, so the water had only recently dried up.
Many tiny recently-transformed juvenile Red-spotted toads at the edge of a drainage pool, Terrell County, Texas
Habitat
Habitat, San Diego County -
close-up of spring in desert palm oasis
Habitat, San Diego County
desert creek
Habitat, Riverside County,
runoff from desert spring
   
 
Habitat, San Diego County -
desert palm oasis


 
Short Videos
A male Red-spotted Toad calls at night from several different angles in San Diego County. California Treefrogs are heard in the background.
Tiny toadlets still transforming from tadpoles crawl around on a mat of algae in a desert pond in San Diego County.

Red-spotted Toad tadpoles in a small desert pond.
Description
Size
Adults are 1 1/2 - 3 inches from snout to vent ( 3.8 - 7.6 cm).
Appearance
A small toad with dry, warty skin, a flattened head and body, and a pointed snout. Weak or absent cranial crests. Round parotoid glands about the size of the eye. Pupils are horizontal. Olive, brownish, light gray above, with red or orange warts, which give this toad its name. White or cream below with or without spotting. Male throat is darkened. Young have many red warts with yellow under the feet. Tadpoles begin as black with bronze flecks on the venter, then become black with faint light mottling.
Voice  (Listen)
This toad's call is a prolonged high-pitched musical trill, lasting up to 10 seconds, which is produced at night .
Behavior
Nocturnal, remaining underground or underneath surface objects during daylight, but occasionally seen moving about in daylight or resting at the edge of breeding pools in the breeding season. In arid regions, toads probably do not move far from water sources. Presumably hibernates during winter cold and during dry periods.
A good climber, easily climbing over rocks. Slow moving, often using a walking or crawling motion along with short hops.
As most toads do for defense, this toad relies on parotoid glands and warts which can secrete a poison that deters some predators.
Male defend breeding territories, wrestling and amplexing other males.
Longevity is most likely under 6 years.
Diet
Eats a wide variety of invertebrates. Prey is located by vision, then the toad lunges with a large sticky tongue to catch the prey and bring it into the mouth to eat.
Reproduction and Young
Reproduction is aquatic. Fertilization is external.  Mating and egg-laying occur from March to September. In the California deserts, breeding occurs mostly April to June. At streams, breeding may span 2 - 4 weeks, but when triggered by rainfall at temporary rain pools, it may span only 1 - 5 nights. Breeding takes place in pools, springs, temporary ponds, intermittent streams, and cattle tanks. Males move to a breeding site and call from various locations - in shallow water, on dry land, on exposed rocks, from burrows, or from under rocks.
Bufo punctatus
is the only toad in North America which lays eggs singly, instead of in a gelatinous string, beneath water. Clutches can contain anywhere from just a few to as many as 5,000 eggs. Tadpoles metamorphose after about 8 weeks. Recently-metamorphosed juveniles spend some time at the breeding habitat. After that, their behavior is unknown.
Reported to hybridize with B. b. halophilus, and B. w. woodhousii.
Range
In California, Bufo punctatus is found throughout the southeastern deserts, as far north as Death Valley, and in localized populations on the coastal slope of the peninsuar ranges. Elsewhere, it ranges into extreme southern Nevada, southern Utah, southern Colorado, Arizona, New Mexico, parts of Oklahoma and Kansas, much of Texas, and south into mainland Mexico. and the full length of Baja California.
Habitat
Associated with rocky desert streams, and also found in oases, pools in rocky arroyos, cattle tanks, grassland, oak woodland, scrubland, river floodplains. Prefers rocky areas where it can hide in cracks and under rocks.
From below sea level in Death Valley and the Imperial Valley to 7,200 ft. (2,200 m.)
Taxonomic Notes
This toad has been renamed Anaxyrus punctatus, but this nomenclature is not yet standard.
Conservation Issues  (Conservation Status)
None known. Widespread declines have not been reported in most of their range, including California. This toad seems to be doing well at historical localities and at sites disturbed by cattle grazing.

Taxonomy
Family Bufonidae True Toads
Genus Bufo True Toads
Species punctatus Red-spotted Toad

Original Description
Baird and Girard, 1852 - Proc. Acad. Nat. Sci. Philadelphia, Vol. 6, p. 173

from Original Description Citations for the Reptiles and Amphibians of North America © Ellin Beltz

Meaning of the Scientific Name
Bufo - toad
punctatus
- Latin - spotted - refers to the spotted dorsal pattern

from Scientific and Common Names of the Reptiles and Amphibians of North America - Explained © Ellin Beltz

Alternate Names
Anaxyrus punctatus

Related or Similar California Frogs
B. b. halophilus
B. w. woodhousii


More Information and References
Natureserve Explorer

California Dept. of Fish and Game

AmphibiaWeb

Stebbins, Robert C. A Field Guide to Western Reptiles and Amphibians. 3rd Edition. Houghton Mifflin Company, 2003.

Behler, John L., & F. Wayne King. The Audubon Society Field Guide to North American Reptiles and Amphibians. Alfred A. Knopf, 1992.

Grismer, L. Lee. Amphibians and Reptiles of Baja California, Including Its Pacific Islands and the Islands in the Sea of Cortés. The University of California Press, 2002.

McPeak, Ron H. Amphibians and Reptiles of Baja California. Sea Challengers, 2000.

Bartlett, R. D. & Patricia P. Bartlett. Guide and Reference to the Amphibians of Western North America (North of Mexico) and Hawaii. University Press of Florida, 2009.

Elliott, Lang, Carl Gerhardt, and Carlos Davidson. Frogs and Toads of North America, a Comprehensive Guide to their Identification, Behavior, and Calls. Houghton Mifflin Harcourt, 2009.

Lannoo, Michael (Editor). Amphibian Declines: The Conservation Status of United States Species. University of California Press, June 2005.

Wright, Anna. Handbook of Frogs and Toads of the United States and Canada. Cornell University Press, 1949.


Degenhardt, William G., Charles W. Painter, & Andrew H. Price. Amphibians and Reptiles of New Mexico. University of New Mexico Press,1996.

Davidson, Carlos. Booklet to the CD Frog and Toad Calls of the Pacific Coast - Vanishing Voices. Cornell Laboratory of Ornithology, 1995.

Conservation Status

The following status listings come from the Special Animals List which is published several times each year by the California Department of Fish and Game.

This toad is not included on the Special Animals List, meaning there are no significant conservation concerns for it in California according to the Dept. of Fish and Game.


Organization
Status Listing
U.S. Endangered Species Act (ESA)
California Endangered Species Act (CESA)
California Department of Fish and Game
Bureau of Land Management
USDA Forest Service
Natureserve Global Conservation Status Ranks
World Conservation Union - IUCN Red List




 


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