Species: Anaxyrus woodhousii
Encyclopedia of Puget Sound
Dorsum yellowish brown, grayish, or olive, with unsymmetrical pattern of small dark spots that usually contain 1-2 warts; usually a light stripe along middle of back; cranial crests (supraorbital ridges) more or less parallel between eyes; parotoid glands about twice as long as wide; maximum snout-vent length about 12.7 cm), females grow much larger than males. Mature male: during breeding season, throat dark and dark patches present on inner surfaces of first and second digits of front feet; expanded vocal sac spherical or slightly elongated; breeding call: a loud waaaaaah lasting about 1-4 seconds and emitted up to several times per minute. Juvenile: middorsal stripe absent or inconspicuous, usually some warts reddish, often misidentified as red-spotted toad. Larvae: dorsum brown or dark gray, often with light mottling/dense gold flecking; head narrow when viewed from above (snout end more pointed and overall body shape more triangular than in red-spotted toad); belly gold with black mottling; eyes dorsal; fins mainly clear with sparse pigment flecks, more in upper fin than in lower; tail musculature dark with light mottling/gold flecking, pale along lower margin; labial tooth rows 2/3; oral papillae restricted to sides of mouth; anus on midline at front end of ventral tail fin; maximum total length at least 35 mm in Colorado. Eggs: black above, tan below, 1.0-1.5 mm in diameter, deposited in long strings in a single jelly envelope; single or double row of eggs in each jelly string. Source: Hammerson (1999).
Classification
Amphibia
Anura
Bufonidae
Anaxyrus
NatureServe
Classification
Ecology and Life History
Dorsum yellowish brown, grayish, or olive, with unsymmetrical pattern of small dark spots that usually contain 1-2 warts; usually a light stripe along middle of back; cranial crests (supraorbital ridges) more or less parallel between eyes; parotoid glands about twice as long as wide; maximum snout-vent length about 12.7 cm), females grow much larger than males. Mature male: during breeding season, throat dark and dark patches present on inner surfaces of first and second digits of front feet; expanded vocal sac spherical or slightly elongated; breeding call: a loud waaaaaah lasting about 1-4 seconds and emitted up to several times per minute. Juvenile: middorsal stripe absent or inconspicuous, usually some warts reddish, often misidentified as red-spotted toad. Larvae: dorsum brown or dark gray, often with light mottling/dense gold flecking; head narrow when viewed from above (snout end more pointed and overall body shape more triangular than in red-spotted toad); belly gold with black mottling; eyes dorsal; fins mainly clear with sparse pigment flecks, more in upper fin than in lower; tail musculature dark with light mottling/gold flecking, pale along lower margin; labial tooth rows 2/3; oral papillae restricted to sides of mouth; anus on midline at front end of ventral tail fin; maximum total length at least 35 mm in Colorado. Eggs: black above, tan below, 1.0-1.5 mm in diameter, deposited in long strings in a single jelly envelope; single or double row of eggs in each jelly string. Source: Hammerson (1999).
Conservation Status
LC - Least concern - Listed as Least Concern in view of its wide distribution, tolerance of a broad range of habitats, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category. - Geoffrey Hammerson, Georgina Santos-Barrera