Minecraft wiki entry for Breeding, associated text: Villagers do not breed automatically when given food. Villager breeding depends on both the number of valid beds in the area (see the village page for full details), as well as whether the villagers are "willing." A villager may become willing if they have 3 bread, 12 carrots, 12 potatoes, or 12 beetroots in their inventory. They may also become willing as a result of trading with a player. When they breed, they produce a smaller villager. Unlike many baby animals, baby villagers do not have big heads in Java Edition. Baby villagers run around the village, and can "play" tag. A baby villager killed by a zombie may become a baby zombie villager, depending on difficulty.