Did you ever wonder (dogs and peanut butter)...

...why dogs love peanut butter so much. We have an eighty-five pound yellow lab named Sully, and Sully looooooves peanut butter. Every few months, when we get to the bottom of the Jiffy Peanut Butter jar, Sully gets a delectable treat -- he gets to clean the "empty" peanut butter jar so we can put it in the recycle bin. He'll spend hours using his six-inch tongue like a spatula -- trying to clean every square inch of that jar. It's a chore for him because he has a biiiiiig head and snout, and getting that snout into the little jar opening is not easy. When it comes to peanut butter, though, Sully is very thorough. However, there is always that one little spot that stymies him. It's usually on the convex portion of the very bottom of the jar -- right in the middle. He can never get this spot and it drives him nuts (no pun intended).When he was a puppy he would chase the jar around the house (or yard), grasp it between his paws, wedge it up against the wall, or try to chew the top off to get closer to the little spot, but nothing worked. As he gets older I think he's realized that he just can't get all of the peanut butter. It still drives him nuts, but when he gets to the little spot, he's mature enough to walk away from the jar. That's my mature boy...
Just so you don't think Sully is the only dog that enjoys peanut butter, check out the video of Cartman working on his own "empty" jar.

By the way, if you decide to give your dog the Jiffy Peanut Butter jar for recycle cleaning, your house will stink like dog and peanut butter for a day, or so.