mountain goat male is called a billie standing on rocky ledge of cliff in colorado

mammal animal wildlife zoo deer goats grazing pet bovine sheep pasture dog horn cattle herd plant tree goat mountain male called billie standing rocky ledge cliff colorado usa goat white colorado male billy billie ledge mountain horns rocky white shaggy fur coat agile adult climbers footed hooves rocks animal wild wildlife mammal large national park nature furry artiodactyla even-toed ungulate mt evans herbivore usa glacier horned alpine majestic cliff outdoor goats rock landscape scenic steep rugged terrain mountains sheep habitat bovidae mount blue sky vertical