1. Does the toad you want to identify have a stripe (dorsal stripe) down the middle of the back? (Sometimes this stripe is faint.)
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Distinct Dorsal Stripe
Go to Part 3
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Faint Dorsal Stripe
Go to Part 3
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No Dorsal Stripe
Go to part 2
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2. Toads with no dorsal stripe.
Use the range maps and / or the shape of the parotoid glands to determine species.
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Sonoran Desert Toad
The Sonoran Desert Toad once occured in parts of the Imperial Valley and along the Colorado River. It seems to have totally disappeared from California. If you find one in California, let me or somebody know! It is characterized by large long parotoid glands, a cranial crest, a lack of a dorsal stripe, and large white warts behind the eye and on top of the rear thigh. It is generally green or olive in color without very dark spots or blotches.
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Range - in red
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Sonoran Desert Toad
Bufo alvarius
(Ollotis alvaria)
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Large, long parotoid glands, cranial crests, and white warts. |
Arizona Toad
The Arizona Toad only occurs in a small area just west of the Colordo River, although it may not occur in California anymore. The lack of a stripe on the back, and/or the large long parotoid glands will differentiate this toad from others that inhabit the same area.
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Range - in red
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Arizona Toad
Bufo microscaphus
(Anaxyrus microscaphus)
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Large, long parotoid glands. |
Red-spotted Toad
The Red-spotted Toad occurs in Southern California, mainly in the deserts east of the mountain ranges and north through much of the Mojave Desert. It's small, rounded parotoid glands and lack of a dorsal stripe will distinguish it from its neighbors. It often has many red spots on the body, but sometimes the red is lacking.
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| Range - in red |
Red-spotted Toad
Bufo punctatus
(Anaxyrus punctatus )
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Rounded paratoid glands
Red spots on back |
Arroyo Toad
The Arroyo Toad occurs along the south and south-central coasts up into the mountains. Usually has a light stripe or patch on the head and eyelids. This toad is listed as endangered because it uses creeks with sandy banks to breed, and this habitat is rapidly disappearing or being destroyed.
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| Range - in red |
Arroyo Toad
Bufo californicus
(Anaxyrus californicus)
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Large, long parotoid glands |
3. Toads with a dorsal stripe.
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Does the toad have enlarged cranial crests on top of the head between the eyes?
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Cranial Crests
Go to part 4
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No Cranial Crests
Go to part 5
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4. Toads with a dorsal stripe and cranial crests.
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Rocky Mountain Toad
The Rocky Mountain, or Woodhouse's Toad has spread into California in the far southeast, along the Colorado River and the Imperial Valley to near Palm Springs. The cranial crests are prominent, sometimes with a boss between them, and they contact the parotoid glands.
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| Range - in red |
Rocky Mountain Toad
Bufo woodhousii woodhousii
(Anaxyrus woodhousii woodhousii)
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Cranial crests |
Great Plains Toad
The Great Plains Toad occurs in the far southeast, along the Colorado River and the Imperial Valley to near Palm Springs. The cranial crests form a boss on the snout and separate widely toward the rear of the head. The large blotches with light edges will also help you distinguish it from the Rocky Mountain Toad, which also tends to have a more pronounced stripe down the back.
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| Range - in red |
Great Plains Toad
Bufo cognatus
(Anaxyrus californicus)
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Cranial crests |
5. Toads with a dorsal stripe and no cranial crests
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Use the range maps to identify the following species.
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Black Toad
The Black Toad only occurs only in Deep Springs Valley southeast of Bishop near the Nevada Border. It occurs with the Great Basin Spadefoot, but is entirely different in appearance, being dark black with a stripe down the middle of the back.
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Range - in red
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Black Toad
Bufo exsul
(Anaxyrus exsul) |
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Yosemite Toad
Males and females vary in appearance. Yosemite toads only occur at high elevations in the Sierra Nevada Mountains. They do not occur with any other species of toad, although the California Toad occurs nearby. The California toad has a distinct dorsal stripe, while the Yosemite Toad has a more faint stripe.
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| Range - in red |
Female Yosemite Toad
Bufo canorus
(Anaxyrus canorus)
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Male Yosemite Toad
Bufo canorus
(Anaxyrus canorus) |
Western Toad
Western Toads are found throughout much of the state, excluding the high Sierras and the deserts (although they can be found in some desert towns.) There are two subspecies, as indicated by the map below.
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| Range - in red, green, and gold |
Boreal Toad
Bufo boreas boreas
(Anaxyrus boreas boreas)
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California Toad
Bufo boreas halophilus
(Anaxyrus boreas halophilus) |