National Geographic : 1954 Nov
654 Horned "Toad" Looks Angry Enough to Squirt Blood from Its Eyes-and It Can! Blood, pressurized in the head, can be ejected through a thin-walled membrane edging the eye; if annoyed, the bizarre creature may shoot its red fluid to a distance of several feet. Despite the squat, toadlike body, Phrynosoma cornutum is a lizard. The Zahl specimen appears about five times natural size.