Smithsonian National Zoo's Giant Panda Cam
The Smithsonian National Zoo's Giant Panda Cam has been the single most-watched animal cam on the internet since 2006, when cub Tai Shan was born during a live broadcast that crashed the zoo's servers from concurrent traffic. The Smithsonian operates panda cams at multiple locations within the zoo (indoor habitats, outdoor enclosures, the famous "panda house" feed), all free to view, all in HD. The editorial reasoning: pandas are the canonical animal-cam content for reasons that are partly cultural (Smithsonian + giant pandas + the diplomatic-loan history) and partly biological (pandas spend much of their time visibly eating bamboo, sleeping, or being adorable). The viewing experience is reliably what visitors want. The Smithsonian's broader webcam program (also covering elephants, lions, naked mole-rats — a particular cult-favorite feed) is free, well-maintained, and educationally enriched with conservation content. We list the Smithsonian webcam hub as the canonical entry; the broader network includes Monterey Bay Aquarium's otter cam (consistently ranked second-most-watched), San Diego Zoo's various feeds, and Explore.org's puppy room.