huge health risk for the animals. sometimes a few minutes on the daily walk doesn t help. people are investing in pet programs to get fido into shape. reporter: four little legs treading through watersheding pounds. lowell la here leading the charge at the morris animal inn. a kind of weight loss spa for pets. here right behind us we have a fitness pool for dogs. yes, exactly. reporter: here pups run on treadmills, jump hurdles, even perform aerobic swims because just like us, our furry friends are battling the bulge, and online fat cats trying anything to slim down. 52% of dogs and 58% of cats are now obese. come on. reporter: lowell la is supposed to be ten pounds but she weighed nearly three times that. her owner says it s hard to say