>>21538177I'm gonna a go out on a limb here and say that Gardevoir doesn't have tits because this is mainly marketed toward 10 year old kids and putting tits on Gardevoir would be frowned upon.
But that doesn't take away form the fact that logically speaking Gardevoirs would have to produce milk somehow if they are mammals(which 90% of the signs point to them being mammals). Just like how logic points to a female Ninetales and Arcanine having tits on their stomachs, even though they aren't explicitly shown.
And I'll admit that drawing E cup tits on Gardevoir is pretty silly.
And going into exasperating species through egg groups is a whole other thing because then you'd have to go into whether or not offspring produced by Pokemon in separate egg groups are fertile or not. And it's really too big of a question that has no depth to draw answers from.