A very funny episode, but it still had it's share of flaws. The first act did seem to meander a bit, especially with all those jokes in the maze, but I liked the direction of the sequence with Santa's Little Helper in the maze (needless Stephen Hawking appearance or not). Another training montage, well at least this one wasn't set to a pop tune. I think more could have been done to express how broken up Santa's Little Helper was psychologically as a result of his job. Santa's Little Helper really only had two assignments and suddenly he's lashing out at Bart, I would have liked more if the process was darker or more intense. I even thought that the plot would become more about SLH trying to put Snake behind bars, but nonetheless I was impressed by the story at the end of the third act, and the scene with Bart getting bitten was simple, but effective.
Again, Santa's Little Helper doesn't seem to get a whole lot of attention due to the lack of scenes with him and Lou living together, and alot of time being devoted to the new pet snake. I liked the final rescue sequence, though the climatic moment where Bart had to choose felt a little gratuitous. Still, what sold me on this episode was the humor, I laughed out loud quite a bit in this episode. There were clunkers like the Shamrock Shake argument and the court sequence, but there was some very memorable comedy to be found here. Dreidel, Dreidel, Dreidel, the police dolphin, the cornicopia sequence, Bart's police dog fantasy, and Skinner's line-up system all had me laughing quite a bit. It's flawed episode to be sure, but I had fun watching it, so I give it a respectable 3/5.