Watchdog

A watchdog is a dog who provides protection by watching for or guarding against intruders. 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
• Non-Maskable Interrupt Watchdog, mechanism used to detect systems lockupsConsumer protection
• An informal name given to consumer protection organizations or campaigners. See: List of consumer organizations
• Watchdog (TV series)
• Watchdog journalism, any media (including blogs) providing consumer watchdog activities
• Transit watchdogOther
• 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

In media:

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