Posted: 06/11/2014 at 23:58
Depends if you're strolling or walking briskly. If the former it'll do no harm but be of no significant benefit either. If the latter, it'll be beneficial as aerobic exercise and to help ease muscle tightness.
I hadn't realised how much my general fitness benefited from walking my dogs till firstly they got older and the walk turned to an amble and secondly, when I lost them and stopped altogether.