There was a movie I seen back around the mid 80's.......It was about a dad and his son riding on a riverboat that breaks down. At the same time there was a trailer hauling elephants and gets a flat tire. Driver unloads them, fusses about flat tire. One elephant blows it back up, things happen and the boy comes across the elephant.
Long story short, the elephant sits on a rope at the end of the movie preventing the dads riverboat from going over the falls. Might of been a disney movie that came on sunday nights, but I have not even found anything like it at all. Anyone remember this movie by chance?