This species of prickly pear cactus is restricted to the Chihuahuan Desert. The Blind Prickly Pear (Opuntia rufida) lacks the obvious spines of most other prickly pears. It does, however, have numerous glochids (very small, very fine barbed hairs) which easily become airborne when livestock bump into the pads as they forage. They can get into the animals’ eyes and result in blindness. This individual was photographed in Big Bend National Park in Texas.