Begins well, but soon deteriotiates into a disappointment - culminating with an incredibly forced 'gag reel' in the end credits.
'Underdog' means well and is, in all honesty, a harmless 81 minute film. As touched on, it does start off fairly promisingly. I liked how Peter Dinklage and Patrick Warburton were introduced, while the set up for the dog isn't as bad as it could've been. It does other decent things, like the effects for Underdog are solid and the quippy, rhyme-filled dialogue for him actually, somehow, works.
However, it ultimately suffers from tedious story creation and execution. As the film goes on, I felt less and less interested in the premise and also nonplussed about the superhero dog - the gimmick wears off quick, even for what is a short production. The end shebang is also very boring.
I can't say I disliked this majorly, to be fair. It's just a poor and forgettable 2007 film from Disney.