TCU – Texas Christian University - Horned frog (or lizard) fun fact: horned frogs are mostly quite docile, but can shoot blood out of their eyes when threatened. Happy World Lizard Day! | Facebook
Hhwaaaaaaaaaah! The Frog Horn! - TCU Magazine
Ventura Frog Kid's Horn 422048 - The Home Depot
Horned Treefrogs and Other Marsupial Frogs - Scientific American Blog Network