The term 'Wild Mountain Goat' is often used to refer to the species of mountain goat known as the IBEX, which has four letters. The IBEX is a species of wild goat that is native to mountainous regions of Europe, Asia, and North Africa. They are well-adapted to living in high altitudes, and have thick fur and cloven hooves to help them traverse rocky terrain. They are also known for their impressive horns, which can reach up to two meters in length.