We have 3 dogs, 2 small and 1 large so I got out 2 different sizes of disposable cups. I used a small pack of dog food I had gotten as a sample, some crushed ice, a few larger bones and some peanut butter. I layered the ice and bits of dog food with a dab of peanut butter here and there then filled them all with cold water. I put them into the freezer until solid.
When we peeled the cups away and gave them to the dogs they were so excited! Lulu took hers and ran to the side of the house to eat it in peace. Ashley and Bear sat on the patio but kept trying to steal each others!
I've made them several times since then. I added over-ripe banana slices, some pureed pumpkin, mixed a little beef broth with the water...all kinds of different things that they like. It's really helped them to beat the heat this summer!