Our cat is a grand old lady now at 17.5. She can still just about jump up on to the sofa, eating well etc. However, it has become very clear that she can no longer clean herself from mid back downwards...the fur towards her tail is now quite matted as a result. She will tolerate a little brushing, but the main problem now is the lack of cleanliness under her tail after pooing. I frequently have to try to clean her up with a damp cloth - something which is distressing for both of us as she struggles, scratches and growls. I think the issue is that her back legs just buckle (currently trying something called Yumove recommended by another cat owner, which can help with stiffness in older cats). Any other ideas? All advice gratefully received!