Agreed - we had 2 and never had to cut their teeth but we took them to get their nails clipped a few times.
Guinea pigs get stressed easily and too much stress can kill them. One of ours got injured in the garden and after taking her to the vet it took a good few days for her to settle back down poor thing
Love guinea pigs though, awesome pets. Sorry to hear he died
Our two lasted a good four years too I think. I presume guinea pigs don't have nerves in or around their teeth? As it would be agonising pain for them if there were.
His teeth where really long he was stopping eating, he picked up eating again once they where cut but he never started eating much anymore.
He developed this nodding over the last couple of days, he was sitting there breathing and it made his head nod abit or something.
I was out for a couple of hours near the hutch cleaning my bike and he was just laying there his eyes not wide open but he looked quite relaxed most of the time although now and again he'd move as it appeared his stomach might have being giving him bother, but usually if he was in pain I know he'd definitely make noise but was not making any.
My parents are not cruel to animals, we have a rabbit who is healthy, has full roam of the garden, and comes in the house for a few hours when it's winter and has plenty of attention from us and if we think anything is wrong we'd take him to the vets, just this occasion with the pig my parents insisted they could do it themselves, apparently a neighbor said they did there guinea pigs teeth fine.
I've always noticed, when I was stroking the pig if you sort of slowly stroked across the top of his head, from his nose up, he'd have some reaction and suddenly move his head all the way up in the air, really odd.
I don't think we'll be getting another guinea pig for some time now anyway, I still forget he's gone sometimes and when I go out always look at the top of the hutch to see where he is, I'll miss the little thing but I'm no where near as upset as when out last rabbit died, that was really upsetting, we brought him home and buried him in the garden, could see blood out of his nose and mouth, the last time I seen him he was in the cage to go to the vet and was abit frustrated as he jumped out and ran into the bushes at like 7 in the morning and it was dark and we had to go find him, wish I'd have last seen him in a better state.