My 13 yr old cat's back has gotten very oily over the last year. It starts where the tail begins, and goes along her back approx 10 cm up. It's always greasy and she get's more and more knotted. She's a Maine Coon mix so semi-long hair. What can be causing this?
It could be diet, what is she eating? Is it grain free? is it kibble only or canned?
I haven't changed her diet recently. Does kibble mean dry food? I give her both, some dry and mostly canned by Purina One and some Feline Porta too.
Look what I have found... http://mysmelly.com/Archive/GreasyTailInCats/ccvkz/post.htm I think that should help!