I have a long haired black cat / older kitten. He's 10 months old. When we got him at five months old, he had some grey hairs in his undercoat in his belly. He was fuzzier as a kitten, then he got more silky as he got older, but now his fur seems like it's getting thicker and changing color. More recently I've noticed white and more grey (and faded black) growing in thicker on his belly and undercoat. Particularly under where his front legs meet his body (underarm area I guess?) to the point that his belly is getting noticeably lighter. His coat in general appears to be getting thicker too (and we are just coming out of winter into summer, so I was expecting him to shed if anything). His hair around his head (ruff?) is getting thicker as well. Is this just his adult coat coming in? Other than the color change his fur seems great (very soft and shiny / silky) When does kitten fur become adult fur? Also the fur on his belly is not quite the same texture as the rest of his fur, it's more crinkly.
