I think this is the problem with social media / networking... it used to be when I was a young kid that if someone wanted t heir dog walked ... you would find someone in your neighborhood that you knew.

Now we use online services and trust people blindly...

As far as the person who lost their dog; I am sorry. I know I did not cause the harm; but it's the only thing I can say.

As a pet owner I would be mortified. I also don't trust anyone with my pets (and they don't trust anyone). So it works out.