He has been making this sound for about a year, he is seems fine and he eats just fine. He is 7 years old and never been sick. He still seems normal in every way, but this sound he started making has me concerned. I have been on lots of sites where you can hear different sounds that piggies make. None of these are even close to the sound that he makes. Does anyone have any ideas. I am new to forum, please help.