According to a report dogs and cats are getting fatter and fatter:
As long as the calorie fundamentalism continues, the situation will likely only get worse. Animals CAN’T even count calories and yet they manage to maintain their weight in the wild. Recommending that pet owners count calories for their pets is perhaps the most ridiculous idea ever.
Feed pets the food that they’re genetically adapted to (hint: not cheap pet food chock-full of nutrient-poor carbohydrates) and they will eat just enough.