@TheDogsMother
That's my point Vanilla and your concerns could equally apply to paid walkers. My owners learned that I had 15 years experience owning a terrier, were welcome to arrange walks for us together as often as they wanted and were welcome to ask me any questions. I agree with your reservations though and I would also have had them about anyone walking my boy until I'd really got to know them.
But my point is that a paid, professional walker has a contract in place. They have insurance outlining their responsibilities. They have qualifications (or should do) in animal behaviour, first aid and body language. A borrower doesn't have any of those things - they have experience of being a dog owner but that's not the same thing.
Also you haven't answered my question - if something goes wrong, who is considered to be responsible? You or the dogs' owner?
As an example, my insurance outlines specifically what I'm responsible for and what the owner is responsible for. I have signed contracts with every single client detailing what I can and can't do, what allergies their dogs have, vet details etc.
So I'm curious to know what happens in your case if a dog in your care gets sick or injured and you're found to be liable as the walker? Does the insurance cover you? What if the owner wants to take you to court?
I'm not picking on you by any means, it's just you're the only one who's responded to my comments 