National Black Dog Day is observed in the United States every October 1. It was created by animal behaviorist Colleen Paige as a tribute to a black dog named Sailor, whom she adopted after the dog was found injured and abandoned. The day aims to combat the stigma surrounding black dogs, which often face lower adoption rates compared to other dogs. People celebrate by encouraging the adoption of black dogs from shelters, sharing their own stories and photos on social media using the hashtag #NationalBlackDogDay. Additionally, those unable to adopt can support local animal shelters. The observance highlights the importance of giving black dogs a loving home and raises awareness about their plight in shelters.