Makes dogs eat slowly!
I have four dogs, medium sized (40-65 lbs). My biggest dog eats slowly, my three smaller dogs inhale their food; I wanted to allow my biggest to eat without feeling rushed by the others. I bought all three round SloBowl designs (drop, coral, flower) for my three smaller dogs. All of the bowls work well. All three bowls are the same diameter (~11"), all three hold about 1L (~4 cups) of liquid; however, they are not all the same height. I feed about 2 cups of kibble, plus treats and soup, which all fits nicely into the bowls. The "Drop" is the tallest, the "Flower" is the most shallow. Despite the differences, all three designs make feeding take about the same amount of time. The dogs would suck up their meals in less than 2 minutes, now it takes them more than 10 minutes. The "Coral" is pretty narrow in some places - possibly not the best for short-snouted dogs.
Consrequires more storage space than ordinary bowl