All of a sudden, my 5 year old maine coon Sean started to get really greasy fur and grew dreadlocked clumps near the base of his tail/flanks/his butt. On the advice of my vet I bought some cat food that advertised omega 3 (or 5 or 6 or whatever) fatty acids. After eating this for a while, the greasy feeling has gone away completely. Now, should I cut out these clumps? Shave them out? (my beard trimmer is useless against his dense fur, I've tried...) Or take him in for a complete haircut? He normally has such a thick, luxurious coat, that I hate to have it all patchy and crappy looking if I cut out the clumps. Then again it's getting colder and he loves to hang out on the balcony, so I dont really want to take his entire fur coat. He did get shaved once before when he had a skin fungus, looked like a panther 'till he got fluffy again. What would you do?