Javelina

Javelina look like pigs from a distance, but they're built differently under the hide — a separate family entirely, Tayassuidae, set apart from true hogs by fused foot bones, a simpler stomach, scent glands, and a stub of a tail. The "collared" part of their other name comes from a pale band running across the shoulders of an otherwise grizzled gray-black coat. Javelina travel in tight family bands called squadrons, ranging from the desert Southwest down through Mexico and Central America into South America, and lean hard on prickly pear and other succulents for both food and water in dry country. Eyesight is poor, so javelina run on scent glands and sound instead — grunts, barks, and a rapid tooth-chattering that carries the message when a look won't do.