Earlier this month, the Nationwide Park Service needed to launch a warning letter to all park guests stating that they need to not lick or have any sort of tongue contact with the Sonoran Desert Toad (Bufo alvarius) usually encountered right here. Unusual, because itβs sometimes widespread sense to not lick any animals. Also referred to as the Colorado River roads, the Nationwide Park Service acknowledges that they βhave distinguished parotid glands that secrete a potent toxin,β Park Service mentioned.