Astro is the Jetsons' family dog. Prior to being a Jetson his name was Tralfas and he belonged to the fabulously rich Mr. Gottrockets. Astro is one of George's best friends, next to his work computer, R.U.D.I., and is able to speak in a rough sounding English, somewhat like Scooby-Doo, whom Astro "pre-dates" in the "real world" by seven years.