The phrase "wild goats" refers to goats that live in the wild, outside of human farms or captivity. They are free to roam and find their own food in nature. Full definition
Aruba's nature, in particular, has an almost otherworldly aspect to it — the desert terrain filled with cactuses, huge stacked - up boulders, wild goat herds, and other unexpected curiosities — and perhaps the best way to explore it all is by foot. (aruba.com)