I was out on my bike, miles from home, when I took the frantic call from Amanda. She never calls when I'm riding unless it's an emergency, so I knew it was serious. An hour later we were racing to the vet's with our middle child cat, Amber. She couldn't put any weight on her back leg and was hobbling badly. To put this into context, Amber has a chequered medical history — which is why we weren't taking any chances. When she was only a few months old, we almost lost her when s