Here are a few contenders:
* Buddy the Dog (from the "Air Bud" franchise): Buddy, a golden retriever, is believed to have earned millions of dollars throughout his career, thanks to his success in multiple "Air Bud" films.
* Uggie the Dog (from "The Artist"): Uggie, a Jack Russell terrier, gained worldwide fame for his performance in the silent film "The Artist." He is estimated to have earned hundreds of thousands of dollars.
* Boo the Dog: Boo, a Pomeranian, became an internet sensation and was featured in numerous commercials and television appearances. He is believed to have earned a significant amount of money from these ventures.
* The chimpanzees from "Planet of the Apes": The chimpanzees used in the original "Planet of the Apes" film were trained for several months and reportedly earned a substantial amount of money.
* The dolphins from "Flipper": The dolphins used in the classic "Flipper" television series were highly trained and likely earned a considerable sum for their work.
It's important to remember that these are just estimates, and the actual salaries of animal actors are not readily available. However, it is clear that some animals have achieved great success in the entertainment industry and earned significant amounts of money.