Rex, meaning “king,” is a great male dog name for dogs who are tough or outgoing. Find out more about dogs named Rex.


Name: Rex

Meaning: “King”

Personality: Tough, Outgoing

About This Name: Television drama Inspector Rex, which ran from 1994–2004, starred a police dog by this name. A sheep dog with the name Rex appeared in the 1995 movie Babe. Former U.S. President Ronald Reagan once had a cavalier King Charles spaniel named Rex. Some famous people with the name Rex are football player Rex Grossman, Canadian singer Rex Goudie and baseball player Rex Brothers. Fictional characters include the toy dinosaur from Toy Story, Captain Rex from Star Wars: The Clone Wars and Desperate Housewives character Rex Van de Kamp. Lastly, we can’t forget the king of dinosaurs – the Tyrannosaurus rex.

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Petful®, formerly known as Pets Adviser, is passionate about helping pets live happier, healthier lives. Our writers include veterinarians Dr. Debora Lichtenberg, VMD, and Dr. Pippa Elliott, BVMS, MRCVS, among other experts. We are a veterinarian-recommended source of trusted information. Founded by award-winning journalist and editor Dave Baker, a longtime advocate for pet food safety, Petful is the leading independent source of U.S. pet food recall information on the web. Learn more about the amazing team behind Petful here: Meet the Team.

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