He'd probably chew the barrel up. I have big horse buckets in there for water and he has chewed that thing to hell. I had a little plastic pool for the dogs to get in he chewed that up. Hell he got under one of my mud trucks and ripped the damn wires out from under it. I think the neighbours would look at my funny if I was out there peeing on the own hahah.
LOL, I hear ya. Lucky for me no neighbors close enough to see.