Everyone loves their dogs. In the case of your dog's leg, back or hip gets damaged, then he can't easily move or walk. That time your dog needs a wheelchair. If you can't afford it from the market, then follow the guidelines here, and make DIY dog wheelchair.
My dog usually greets people with just a sniff. If they have the smell of another dog on them he will give what I call the nose vacuum.
A teenager visited me yesterday, my dog greeted her like an old friend. I have never seen him make such a fuss over anyone, even me!
She told me she didn't have or give him any treats.
I would be interested to know what other people think of the old wife's tale of a dog can tell if a person is a good person.
