I just did a search on DeviantArt for Nidoqueen art, only to find that over half of the results were drawn by people with inflation fetishes. To that, I say, 'Damn you, internet. Damn you straight to hell.' >:[
This is what happens when you use a Moon Stone on a young Nidorina. That or it's one of Copy Nidoqueen's kids.
When Nidokings look for a mate, they search through Nidoqueens and use their hardest dizzy punch! If they don't faint that means it is willing and strong! So that's my story on how they find their mate!
Required Nidoqueen picture, except a bit more stylized. Also, I semi bordered the picture with her Mystery Dungeon quote. I used it because it's true. I've always found her to be more useful.