My pig is about 4 or 5 months old. He is very healthy. He eats his pellets, hay and veggies everyday and gets excited when I refill his hay. BUT I never hear him squeak or make any pig noises? Is this a baby Guinea Pig thing? Or is my hearing out of wack? lol Only once have I heard him do squeaks when he was running around the house but it was very faint. I don't know if this is normal because cavies are very vocal right? This is my only concern other than that my Prometheus is very healthy.