You may begin breeding monsters with Clint in Herbage after defeating the ghost monster in his basement. Breeding uses two parent monsters, creating a new monster from them. You get three choices, one of each parent's type with random move combinations from the parents. The third monster choice is an entirely new monster, depending on which monsters were mated.
monsters can be bred by Clint in Herbage. Breeding requires one male and one female monster (Note: The parent monsters disappear after breeding). Breeding makes the game much easier, as the child can inherit stats and skills from his/her parents (similar to Dragon Warrior Monsters). For example, a Kiticon that was created through breeding a female LV40 Felistrype and male LV10 Batocurse will have much higher stats and more skills than a monster found in the wild. Breeding is also the only way to acquire certain monsters such as the starters.
Below is a list of monster combinations and resulting third offspring choice. (Still needs completion, please contribute when able.)
Sedisonic + Sedisonic yields Manpower (Animal)
Sedisonic + Spirispear yields Elevil (Rock)
Windicrest + Windicrest yields Kiticon (Fire Starter)
Windicrest + Sedisonic yields Fernarus (Plant)
Windicrest + Kiticon yields Bubblonster (Spirit)