EVEN THE PIGEONS ARE BECOMING OBESE!

Of course, fat pigeons may be only the beginning. If one embarks on a tour of animal corpulence, spiraling out from captivity to the wild, a seemingly growing army of rotund beasts rounds into view. At home the fat animals are well known: They are fat husbands and fat children, fat dogs, fat cats, and fat pet macaws. Zoos and aquariums keep their own set of fat creatures in captivity. In 2008, for example, the dolphins at Japan’s Kinosaki Marine World grew too plump to jump, and were placed on a reduced-mackerel diet. A similar difficulty arose in a Shanghai aquarium when the sharks got so tubby that keepers gave them fish stuffed with cabbage to help them slim down.
http://www.slate.com/articles/health_and_science/science/2012/04/animal_obesity_are_pigeons_getting_fatter_.html