Minecraft wiki entry for Development_versions, associated text: Spawn in the Extreme Hills biome.
Take reduced fall damage.
Will sometimes attempt to ram other mobs, including players.
The ram target can be up to 16 blocks away, but the ram itself only goes 9 blocks. Goats will attempt to get closer to targets that are too far to be reached.
Have a cooldown of 10 to 15 seconds between attacks.
Will not attack goats and shulkers.
Ram will be canceled if attacked.
Drops a horn when they ram into a tree.
Can be bred with wheat.
Breeding results in 3 to 8 baby goats.
Have 10 health.
On death, they do not drop items, but adults will drop experience.
Can be milked with a bucket, similar to cows.
Can be attached to a lead.
Currently behind Experimental Gameplay toggle (Caves and Cliffs sub-toggle).