How can I get a dog in GTA Online?

To acquire a dog in GTA Online, one must own a property with available space for a pet. The 'Cayo Perico Heist' update introduced the ability to purchase a guard dog for the player's in-game compound from Warstock Cache & Carry. As of the latest updates, players can also interact with Chop, Franklin's Rottweiler, within the 'Contract' update missions, though he isn't a pet that one can own or customize. Players should keep an eye on future updates, as Rockstar Games frequently introduces new features and content which may expand the options for acquiring and interacting with pets in the game.