My female wont clean her booty!

[misstorri]

One of my females will absolutley not clean her backside! My hubby and I constantly have to clean it for her. I assumed it would eventually encourage her to do it herself since she cant stand it but so far no luck! Her sister (same litter) has no issues. Anyone have any ideas as to why she's not cleaning herself or how to get her to do it? My entire life of having cats and I've never come across this!

 

[catsallaround]

She overweight or older(arthritis)? If she physically can clean it I have had luck putting a dab of vaseline on the butt. Theory being cat will sense something and lick it off. I did this for a bottle baby and for a few given away to soon kittens(out of box in front of a store so I had no real choice).

 

[misstorri]

She is a little overweight, something we're definitely working on! Even when she was a kitten she didnt do it. Her and her sister were feral so I would've expected her to be quite vigilant. I will try the vasaline and see if that helps. Thanks for the suggestion!