Penny had the stitches out today and when the vet examined her foot he said she should be fine to go for walks, even though her foot might be 'tender'. The original problem, which seems to be a build-up of calloused skin, hasn't been resolved, but the vet thinks the large slice he took out for the biopsy might result in new blood-flow to the area and thus solve it. The problem seems to be developing on her other front foot, though. I guess we'll deal with that when necessary...
She set off enthusiastically for her first proper walk in two weeks, sniffing around Yarra Bend Park.
And, joy of joys, she found a ball.
After lots of bounding around and rolling, Penny noticed her foot was indeed tender. More than tender, by the body language.
So we headed home.