A watchdog is a dog who provides protection by watching for or guarding against danger. It may also refer to:

In computing

• Watchdog timer, a device in computer systems
• Event Log Watchdog, a freeware software program
• Watchdog Event Log, created by Windows operating systems using the .WDL extension

Consumer protection

• An informal name given to consumer protection organisations or campaigners
• Watchdog (TV series)
• Watchdog journalism, any media (including blogs) providing consumer watchdog activities
• Transit watchdog

Other

• Nuclear watchdog, synonymous with the International Atomic Energy Agency
• Government agencies that police other agencies, such as the Government Accountability Office investigations of the Department of Defense
• Citizens' groups that monitor and report on government, corporate, and other abuses, such as Human Rights Watch

• Watchdog (comics) is the super-powered Welsh Corgi belonging to Robert Reynolds, the Sentry in the Marvel Comics 616 universe.

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