Cucseel

An extremely affectionate Pokémon, Cucseel is born and raised in families of other Pokémon. This is a phenomenon known as brood parasitism, in which Cucseel eggs are placed within the nests of other species and take up resources from the host family. Biologically, they are hard wired to display extreme affection towards their "mother," in order to create a strong attachment. In recent years, a trend appeared in which couples take Cucseel eggs into their own care, limiting the number of wild instances and bringing significant happiness to infertile couples. Certainly, its cute face and feathery wings do make it exceptionally cute.