Trivia: In the closeups of Goob on the baseball field, there are two billboard advertisements on the fence behind him - one is "Jungle Book" featuring Mowgli with Baloo, and the other is "Toy Story 2" featuring Woody, Jessie, and Bullseye.
Trivia: When discussing Wilbur's family, he says his dad Cornelius looks like Tom Selleck. Tom Selleck is the one who provides the voice for the adult Cornelius Robinson.
Trivia: A reference to the DeLorean from Back to the Future - on Louis' notebook there is a drawing of a flying car with the tires in horizontal position.
Trivia: In Louis' room on the wall there is a Walt Disney picture beside Nikola Tesla.
Answer: There's no indication that the dog had anything to do with Mr Peabody (especially since the dog didn't speak or do anything other than sit there). It was just a front for a throwaway joke.
GrafSpee
It's a coincidence because Mr. Peabody and Sherman was not released until 2014 and Meet the Robinsons came out in 2007.
But that film is based on the Peabody's Improbable History segment from the 50s/60s TV show The Adventures of Rocky and Bullwinkle and Friends.
Jon Sandys ★