Years ago, when we lived in the city, and newman was young, he'd pick up, bring inside, and chew pecans
the fell into the yard from trees over the fence. Stepping on the shell pieces was like walking on broken glass.
So we set a bowl of a different brand of dog food on the patio table. When we saw him with a pecan, we'd
call him over and trade it with him for a dog food pellet.
Pretty soon, he'd picked up and traded in every single one in the yard, and seemed so proud for doing it.
After we ran out of pecans, we'd 'accidently' drop a piece of paper or kleenex. He'd grab it and come trade it in.
Nine years later,,,,, he is always searching and keeping an eye out for any little piece of paper or cellophane wrapper.
I've since switched him over to baked doggie crackers I make that are just flour, peanut butter, water,
and a bump of veg. oil. I roll 'em out on a cookie sheet, then cut them to about the size of a postage stamp.
He was out in the garage with me today, and I thought it was pretty clean. I try to keep little bits of trash picked up
so he won't get fattened up by bringing stuff to trade in for a dog treat. .....
He only found and traded in two things this trip. A ear plug, and little piece of plastic wrapper from something.