SLAG, it's cool I was just tossing some other ideas out. I like the giant junk yard dog idea.
Aus, Now That would be funny. I could see you passing him saying " Morning Sunshine." Or telling people about a dog named sunshine, and then them seeing him.
Sickle bar blades might be big enough for the teeth. Or maybe some cultivator tines. Protruding out a bit almost like piraña teeth.
I'm always loving the pictures of the scrap you have there.