I feel like an idiot. I had 4 doubles (3 grey and 1 black), and I had so many swaps, I ended up swapping both blacks away. I traded by two greys of course, but now I have some doubles. In the end, I got rid of one grey dog (I got two more when trying to swap eggs for blacks), and I have 2 white floppy ears and blacks

Normally I'm cheap with my eggs, but in this case I happen to like doubles..