I have always trimmed Skillet's nail tips every once in a while. He is 11 yrs old now. Suddenly, his nails are very thick and sloth like. They are way too long and he cannot hang on to anything. Is this a possible fungus? (I've heard of a human nail fungus that causes thick nails) There's no way I can trim them at all, it's like there is blood flow throughout, they are very thick. It's like his body used a burst of calcium and they just grew and grew. I've tried to file them, but this is getting me nowhere. Any suggestions? I want his little needle claws back! Pics coming soon.....(sorry I've frequented this site for years but never posted before, bare with me)