Character mistake: At the FBI facility, Agent 11's handler buckles the collar on the dog's neck. Later, when Gordon has put the collar on and tries to get it off, he's trying to pry it off. He just buckled it on not two minutes earlier. He's stupid, but not that stupid.
See Spot Run (2001)
1 character mistake - chronological order
Directed by: John Whitesell
Starring: David Arquette, Michael Clarke Duncan, Leslie Bibb, Joe Viterelli
Other mistake: When Stephanie (the kid's mom) gets sprayed with mud by the bus, it is accelerating as much as it can in reverse. Why would it accelerate so much in reverse if it's trying to avoid falling down the hill?
Officer in Alaska: You seem especially happy to be here.
Murdoch: This is not a smile, my face is frozen like this.