Factual error: In this film, the serum relay is done by just one dog team. In reality, it was done by many different teams, with the team led by Togo going the farthest.
Continuity mistake: When Steele is falling down the cliff with Jenna's bandana in his mouth, right before he hits the bottom, the bandana turns white.
Continuity mistake: While Balto is running the race, Boris is seen jumping around on a fence, cheering him on. Throughout the race, that fence changes from wobbly and dark brown to stable and light brown.
Continuity mistake: When the bear falls through the ice, it leaves a gaping hole. Once Balto slips under, an overhead shot reveals that the hole that the bear left in the ice is gone.
Continuity mistake: When Steele and his trio of dogs are mocking Balto in the alley by howling, in the shot where they see Balto growling at them and stop, the purple/gray dog's back stripes are gone.
Answer: He has an arrogant, power-hungry personality. As the situation with the medicine gets worse, he doesn't want to lose admiration from the humans and other dogs.