Good thoughts headed your way for Cosmo Tracey. There are a zillion and one reasons why she is limping. Not all of them are cancer, that is just the one you think of first. Please let us know how she makes out and know you have lots of support here.
Yep, use your hands / fingers. The most difficult part of it for me is getting Pooter to stay on her feet for it. She is pretty sure that is the signal for a full on tummy rib.
No experience Marion, but I wanted you to know I am thinking of you and your precious boy. It is not easy to watch our beloved pets get older.
Oh if you need anything from the States you can't get over there, just let me know.