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Three different modded variants, however the black variant was in minecraft dungeons.
A goat is a neutral mob found in certain mountainous biomes. Goats can jump especially high and ram mobs. They are a source of goat horns and milk. Groups of two to three goats spawn above opaque blocks on snowy slopes, jagged peaks, and frozen peaks at the surface at a light level of 7 or higher. Goats spawn individually and more uncommonly after the world generation. 5% of all goats spawn as babies. Goats drop a goat horn when they charge into a solid block. There are 4 horn variants for normal goats ("Ponder", "Sing", "Seek", and "Feel"), and 4 horn variants that only screaming goats drop ("Admire", "Call", "Yearn", and "Dream"). Up to two horns can be dropped per goat, and both are always the same variant.