I can't see their pictures on my computer, so you must be using Photbucket. I subscribe to an internet filtering service, and it won't let anything from Photobucket show on my computer screen. BUT, you might want to try feeding them an adult light food. I give my cat Science Diet Light Adult feline food, and she free feeds, but has been able to maintain her weight. How old are Bob and Don? If they're adults, they might both benefit from this. But you might want to check with your Vet. to be sure what is best for them.