Minecraft wiki entry for Panda, associated text: The panda is the only animal to have extra breeding conditions. To enter love mode, there must be at least eight bamboo blocks within a five-block radius of both pandas. Once that requirement is met, feeding them bamboo causes them to mate, producing a baby panda, and the panda becomes passive instead of neutral toward that player. If a panda is fed without a sufficient amount of bamboo nearby, it sits and eats the bamboo, but does not enter love mode. Also, if the player feeds two pandas too close, they instead bleat and become hostile toward the player.