Pygmy short-horned lizard (72%) and yearlings consume the lowest proportion of ants (60%). Pygmy short-horned lizard The pygmy short-horned lizard ("Phrynosoma douglasii") is a species of small horned lizard that occurs in the northwestern United States. In the past it also occurred in adjacent Canada. Like other horned lizards, it is often called a "horned toad" or "horny toad," but it is not a toad at all. It is a reptile, not an amphibian. The specific name, "douglasii", is in honor of Scottish botanist David Douglas. The pygmy short-horned lizard is often mistaken for its close relative the greater short-horned lizard ("P. hernandesi"
Golden toad led bachelors to attack amplectant pairs and form what has been described as a "writhing masses of toad balls". During the 1977 and 1982 seasons, males outnumbered females by over 8 to 1 at breeding pools. Each toad couple produced 200–400 eggs each week for the six-week mating period, with each egg approximately 3 mm in diameter. The eggs of the golden toad, black and tan spheres, were deposited in small pools often no more than one-inch deep. Tadpoles emerged in a matter of days, but required another four or five weeks for metamorphosis. During this period, they were highly