Giant Toad vs. Gulf Coast Toad
They live together in the Lower Rio Grande Valley; a young Giant Toad is the size of an adult Gulf Coast Toad. A: Enormous and swollen, reaching back onto the side in the Giant Toad; oval and moderate, close behind the eye in the Gulf Coast Toad. B: Bony ridges over the eyes running down to the snout; no sunken valley in the Giant Toad; high crests with a deep, sunken valley between the eyes in the Gulf Coast Toad. C: No stripes: brown or olive with darker blotches in the Giant Toad; a broad dark band along the side under a pale stripe in the Gulf Coast Toad. D: Huge: 4 to 7 in, up to 9 in the Giant Toad; 2 to 4 in in the Gulf Coast Toad. The Giant Toad's gland poison can kill a dog. Its call is a slow, low trill like an idling motor.
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