In the Wizard of Oz, Toto made more money than the Munchkins!

Turns out Dorothy's faithful companion in the Wizard of Oz also had some pretty good incentives to stick with her. When they filmed the 1939 movie, Terry, a Cairn Terrier was cast as the tiny companion to play against Judy Garland. For being next to her, the dog was paid $125 per week. The actors who played the Munchkins were paid $100 per week.

To give you some context, in 2012 Dollars, the little dog would've been paid about $2,000 per week, while Munchkins were paid about $1,600 per week. Terry actually suffered an injury on the set. One of the Winkie guards stepped on it, and had to be replaced for a bit. She became really popular after the film, and was officially renamed Toto by its owner. Terry, or Toto, appeared in 13 different films, and lived to be either 10 or 11 years old.

(Source)