I have 2 foam ramps (that I covered in fabric) that Roxy and TJ use to get up and down from the couch. My bed is very high, but they know that they must be picked up to get up and down.
Here is where I got the foam ramp from:
http://cgi.ebay.com/NEW-Foam-Dog-Cat...QQcmdZViewItem
Roxy and TJ never act like they are in pain. Roxy we saw her do this 'skip thing' and also when we pick up up we can feel something slipping. Every once and a while she would limp for a day.
TJ has limped 3 times over the past 6 months and we can also feel something slipping. a couple different Vet and 2 different Ortho Specialist have confirmed LP in both legs in both Roxy and TJ.