Desert Horned Lizard vs. Pygmy Short-horned Lizard

Horned lizards are flat, round and spiny. A: the Desert Horned Lizard has a row of clearly pointed horns across the back of the head, unbroken in the middle; the Pygmy Short-horned Lizard has tiny stubby horns broken by a deep notch at the back of the head. B: the Pygmy is tiny, under 2.5 in head and body; the Desert Horned Lizard reaches 3.75 in. The Desert Horned Lizard lives on desert flats of the southwest; the Pygmy in sagebrush and open pine of the west and north, into the mountains.

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