My 14 year old male taby can't meow anymore. I cut in and out and is extremly strachy if he does. that is if anything comes out at all when he opens his mouth He was just fine up to a couple of says ago. he eat and drinks and does eveything else just fine. whats wrong with him? we also got a kitten 4 weeks ago... but this isn't his first time with a new pet.... also ... he is also diabetic.....