Porkchop has developed a luxating patella and can't go for walks anymore. He's almost 8 yrs old so surgery is out of the question (plus I lost my well-paying job a few months back). He looks depressed, just sitting around the house. I've been taking him for car rides which peps him up. But I would rather take him for strolls in the neighborhood. I've seen some of you posting photos of strollers but what brands? And which ones hold up to a 40-lb bulldog? Any suggestions with a reasonable price? Has anyone tried using a human stroller?