Oh, Lilly. I’d like to scratch your mutt ears and pet your mixed-breed head, because although you’re a mongrel, it’s easy to guess the biggest portion of your heritage. Golden retriever? Of course.

But Lucy — well, you’re a dog with a spotty inheritance. What exactly? I certainly can’t guess. Maybe someone else can. Good luck.

Both dogs were part of the MuttMix Project Survey, a scientific quiz conducted by Darwin’s Dogs, a program run out of the Broad Institute in Cambridge, Mass., and the International Association of Animal Behavior Consultants.

The researchers set up an online survey with pictures and video of 31 mutts, and participants were asked to guess the top three purebred strains comprising each one. The scientists waited two months to release the results.