It's a sign!

The things you see while out walking (and picking up after) your dog.

When you think about it, dogs have evolved far more successfully than humans. We first buddied up with them because they worked for us. Now while I'm out chipping away at the coalface, my dog is curled up at home in a nice comfy bed waiting for me to get home to take her a walk, play with her then feed her. I even pick up her pooh for her!

We didn't domesticate dogs, they domesticated us :)