Jigglypuff

Biology
As stated in, Jigglypuff and Wigglytuff, as well as Clefairy and Clefable, are believed to have come to earth from moon. The biggest evidence is the fact that they evolve upon being exposed to a Moon Stone.

Behaviour
It is believed that Jigglypuff and Wigglytuff bred with Nidorino and Nidorina after they came to the earth and began to adopt the life on earth.

Habitat
No Jigglypuff has been found or encountered as a wild Pokémon in the nature.

Minor Appearances

 * Jigglypuff was mentioned by that they are believed to have come to earth from space.