1. Mountain goats are not true goats; they belong to a collection recognized as goat-antelope.
2. Unlike the ridged, curved horns of true goats, the mountain goat's horns are only somewhat curved and nearly smooth.
3. Their hooves have hard outer bullets and a rubbery, concave set of footpads that act as suction cups when they walk in their steep surroundings, and help cushion their feet when they jump from rock to rock.
4. They have an aggressive social structure, often pushing and shoving each other. Each goat has a rank that determines the best sleeping and eating spots. The larger nannies usually rank at the top.