Most toy poodles have rounder eyes and a wider skull than most miniatures. The standard of the breed for poodles indicates that all poodles should look the same regardless of size. For very well-bred poodles that's close to truth, but I have never seen a show quality toy poodle that has quite as long and lean a head as a show miniature poodle. People breeding toys and miniatures for show try to get them as close to the top of the height limit as possible (10 inches for toys in the US and 15 for miniatures). I can tell you from personal experience that it's very hard to win with a miniature who is under 14 inches!Thanks, Johanna! I agree that the fact that none of them were well-groomed raises a red flag.
May I ask how you tell an oversize toy from a small mini? Do they actually look different? Some websites say the difference between toys and minis is simply the size and I'm confused.