One of these defenses is poison. For example, the Colorado River toad secretes a toxic compound known as 5-MeO-DMT. This creature’s poison extends beyond mere survival tactics, though.

The Kihansi spray toad is a tiny, vibrant amphibian that ... Built in the 1960s on the Colorado River, this dam created Lake Powell, one of the largest man-made reservoirs in the U.S. While ...