They inhabit mountainous regions. The leader of the herd is decided by a battle of clashing horns.
(From Bulbapedia)Gogoat are quadruped, hoofed Pokémon similar to goats. They are covered in fluffy, brown fur that is dark across the back and light around the belly and legs. Around their neck, they have a thick, green leafy mane that extends down their spine and ends in a short tail. The fur on their face is white with fluffier fur on their chin. They have a black nose and red eyes with white pupils. The eyes are surrounded by a black marking. The top of their head is dark brown and has two long, curving, black horns that extend over their back. The fur on their legs is shorter than the rest of their body, dark brown on the upper leg, and white around the feet. Each foot ends in a cloven, brownish-orange hoof.
Gogoat has the ability to sense the feelings of whoever grips its horns; this ability is so acute that it can move as if it and its rider were one being. Wild Gogoat live in mountainous regions and choose their leader by locking horns.
Relic Gogoat’s DNA was altered, and rocky outcrops grew all over its body. Old records tell of a mounted Relic Gogoat ending a month-long siege in a matter of seconds, by turning the castle gates to splinters with a full-speed horn bash. No momentum was lost.
(From Bulbapedia) Gogoat is based on a goat, possibly a bharal, dwarf bharal, bilberry, or ibex due to its horns, though they also resemble the horns of various gazelles and antelopes. It is also based on a motorcycle, as it can be ridden and has beach bar-like horns. The grass that grows upon it may originate from Pan or Faunus, gods of nature who are half-goat, half-human. The grass could also be a reference to the traditional yule goat figures in northern Europe made of hay.
(From Bulbapedia)Gogoat may be derived from go, 轟轟 gōgō (rumbling), and goat.