Can't deny that it wasn't effective, though Rabastan has to wonder how a dog that fat should be so hungry as to out-hoover a Hoover the way he does.

Or it's canine greed. "Wolfing" was invented by wolves, and dogs are perfecting it.

"Most interesting. It's not magic that he—your master—used to make your collar?"

If Dug doesn't know what magic is then he'll know it's Muggle tech at work.