Max and Alfie have just turned 6 months old and were both neutered last week. Before this, they rarely if ever meowed. They'd chirp and chatter, but I could count on one hand the number of times I heard a meow. Since they got back from the vet this has changed, they now meow when they want something, and meow when they can't reach something, and sometimes just meow for the heck of it. Is it possible that they learned this from other animals at the vet surgery? Or is it more to do with them maturing? Just curious!