[It could have been a Ditto doing it and then he'd have eggs from all of his Pokémon.]

I'm not sure. I guess there just needed to be a difference between breeders and trainers or something. [How a career affects the life of Pokémon is forever a mystery.]

No. Most of the grass ones are still without a home. Well, actually the Eevees are the only one's that I've managed to re-home completely.