Hello, I have a 4 month old male kitten, he is usually very vocal, a few days ago I had him out for a walk, (yes on a leash and he walks, I don't pull him) he loves outside. He's still very energetic, eating, drinking and going to the bathroom, but over that last few days his voice has been cracky and yesterday he lost his voice completely. I'm wondering what I should do, I called the vet and to get him in and get him checked it will be around $150. But he's fine other than his voice?