Dog slow feeders resemble regular dog bowls, but they have a series of raised ridges or protrusions that prevent the animal from gobbling up mouthfuls at a time. Instead, the canine must take his time to manoeuvre between the obstructions to get to the food. The obstacles reduce the amount of food he consumes in each mouthful, which then lessens the amount of air he swallows with the food. Slow feeding prevents problems such as obesity, choking, vomiting or bloating, which can be life-threatening in dogs. If your dog devours his meals too quickly or shows signs of digestive distress, he may need a slow feeder.