Outward Hound has another winner with the SloBowl Feeder in a swirl configuration. High marks across the board for this feeder. If your dog tends to bolt his food, this will slow him right down—up to 10 times slower—providing some fun at dinnertime, improving digestion, and helping prevent pools of vomit on your good rug. The secret is the meal-lengthening ridges and valleys that force your dog to pick at the kibble in between. A skid-resistant bottom helps keep the bowl in place. The SloBowl is intended for dry food, and I would imagine that putting canned food in there might just create a mess, although it might also depend on the dog. Works fine for short-snouted breeds! Goes right in the top rack of the dishwasher for easy cleaning. SloBowl is free of lead, BPA, PVC, and Phthalate.
 
We offer this SloBowl in purple.
 
    Mini  9  x  9"  x  2"  Deep  Holds 2 Cups
Large  12 x 12" x 2.5" Deep  Holds 4 Cups
 
Here is the primer on the SloBowl, from Outward Hound.
Watch Ramon Zepug give SloBowl a good workout: a side-by-side comparison that show how much the SloBowl slows things down.
 
Here's a bonus video, just for fun:

Watch Grover the pug spaz big time over his new SloBowl before doing a face plant and eating dinner. Guess he showed that bowl who's boss!