BreedingEditBreeding is how you get more Monsters in Monster Legends. There is a Breeding Log that shows what monsters that were used in the breeding and the Egg that resulted from breeding. Most monsters can be obtained by breeding, while some rare monsters are not even available by breeding.
When you feed a monster to level 4, it becomes a juvenile. Common monsters become adult at level 7. Monsters with 2 elements reach adult form at level 10, 15, 20, Or 25. Legendary monsters reach their adult form at level 25.