My cat is 6 months old. Eating a mix of dry and wet food (if this is useful info) . Today or a few hours ago I felt that the hair on his back was a bit hard and lumped. I thought perhaps something sticky fell on it so I tried to clean it by pulling out what I thought was the dry residue. It was a bit hard to pull and pulling further made me question what it was. My cat perhaps didn't like it too much as he gently tried to bite my hand instead. I pulled out half of it before he got up and left. So a while ago I was able to pull it all out. And my cat seemed rather happy that I did it. I thought it might just be dry skin but the bunch of hair horrified me a bit. It is about 4-5cm long. I'm just a but freaked out and would like to know what it could be because it wasn't there yesterday. I couldn't pet him earlier in the day as I had to go out. Other parts of his skin seem fine. PS, sorry these are the best pics I could take as I didn't find an option for gallery.