A cocker spaniel puppy named Gösta has become an online sensation after his owners revealed he suffers from narcolepsy and cataplexy, a rare neurological condition that causes sudden, uncontrollable sleep and loss of muscle control whenever he becomes overexcited. The videos have struck a chord with social media users, who have flooded the posts with affectionate comments, highlighting how quirky pet health conditions can capture widespread public attention and warmth online.

Gösta was diagnosed with the condition at just nine weeks old, and his owners say the prognosis is positive, as dogs with narcolepsy can typically go on to enjoy an excellent quality of life. His owners have shared clips of him nodding off during walks, while eating treats, and while playing with another dog, all of which have delighted viewers on platforms such as TikTok, with users praising his sweet nature and calling him a "sleepy boy".