Nintendogs is a real-time pet simulation video game developed and published by Nintendo for the Nintendo DS handheld video game console. It was released in Japan, and was later released in: North America, Australia, New Zealand, Europe and other regions. It was originally released in three different versions: Dachshund & Friends, Lab & Friends and Chihuahua & Friends. It has been re-released twice, first as a bundled release with a special edition Nintendo DS with a new version called Nintendogs: Best Friends and later as Nintendogs: Dalmatian & Friends.

The Nintendo DS is a foldable handheld game console produced by Nintendo, released globally across 2004 and 2005. The DS, an initialism for "Developers' System" or "Dual Screen", introduced distinctive new features to handheld games: two LCD screens working in tandem, a built-in microphone and support for wireless connectivity. Both screens are encompassed within a clamshell design similar to the Game Boy Advance SP. The Nintendo DS also features the ability for multiple DS consoles to directly interact with each other over Wi-Fi within a short range without the need to connect to an existing wireless network. Alternatively, they could interact online using the now-defunct Nintendo Wi-Fi Connection service. Its main competitor was Sony's PlayStation Portable during the seventh generation of video game consoles.