OHMO Slow Feeder Dog Bowls(Tree Life, Sage Green) Enrichment Soft Silicone Food Safe Feeding Bowl Non Slip Suction Cup for All Breed Pet, Cat Slow Down Eating Dishes, Boredom and Anxiety Reducer

They're labs, you think they mind?! Yes people do use grass as a giant snuffle mat. Alternatives: Puzzles - soak and freeze in a kong or similar, get a snuffle mat, sprinkle on a towel then roll and tie in a knot (ONLY if dog won't eat towel), sprinkle in a box of toys or paper (if won't eat) Use it up in training, the reward is a bit of kibble (or a handful, held, dropped, or put in a bowl) Raised bowl (ime determined dogs just shove it over) Spaniel bowl (it's meant for water, but no reason it wouldn't work. I'd get a slow feeder insert though one like this