Both the piggy savvy vets I see say I'm picking things up very early, but I think you do when you have them in your living room and you handle them most days. I would rather go to vets a bit early than too late! I was too late with Willow, he was only 10 months old and was full of stones but it wasn't until the last two days he showed any signs of being ill, I find it hard to forgive myself and just pray he didn't suffer too much pain. The vet did say it couldn't be diet at that age unless he'd been fed handfulls of spinch and kale everyday (I don't feed spinich or kale!). The vets are very good at guiding me through the options and telling me the success/failure rates they get with various treatments. It's easy to think you failed with hindsight. I think we have to accept we make the decisions we make to the best of our ability at the time with the facts we have available, it's been a hard lesson to learn. I can't change the piggies genes or promise them a long life but I try really hard to keep them well, free from pain and give them a good life for however long or short that is, this is my new mantra!