Seriously?

[ His surprise is enough to slacken his grip on Sven's harness, which gives him the room to try and snatch the carrot in front of him with his teeth. The moving part of the bargain seems to be lost on him. ]

I'd say he's usually not this rude, but I'd probably be lying. [ He's grabbing onto him again, trying to guide him backwards. ] He said you had to move. This is why no one gives you treats anymore, you big lug.