The Arroyo toad (Bufo californicus) is a stocky, blunt-nosed, warty-skinned species of toad, between 5 and 7.5 cm long. It has horizontal pupils, and is greenish, grey or salmon on the dorsum with a light-colored stripe across the head and eyelids, it has light sacral and mid-dorsal patches, large, oval and widely-separated parotoid glands and weak or absent cranial crests.