Fetch

My dog loves to play fetch.
It’s really simple to play: I throw a stick and he runs after it.
The problem is, he keeps bringing back the wrong stick.
For example, I just threw a small tree branch, and he came back with a cedar plank.
I threw the cedar blank, and he came back with a wooden chair leg.
I have no idea where he’s getting all these different bits of wood.
So, I took him to the beach and we played with driftwood.
Same thing – he comes back with Maplewood.
How about we try tennis balls instead?