Yosemite Toad vs. Western Toad
Both live in the high central Sierra Nevada, where they meet and sometimes hybridise. A: None, or only a thin faint line in the Yosemite Toad; a clear pale stripe down the middle of the back in the Western Toad. B: Males plain yellow-green to olive with few marks; females boldly blotched in the Yosemite Toad; both sexes alike: dark blotches on grey, brown or green in the Western Toad. The Yosemite Toad's glands behind the eyes are round-oval and set close together; it gives a long, sweet trill, the Western Toad weak peeps.
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