International Rabbit Day is observed worldwide every fourth Saturday of September, with the next occurrence on September 27, 2025. Established in 1998 by a UK-based charity, the day celebrates rabbits and promotes responsible pet ownership while highlighting issues such as pet abandonment and the protection of wild rabbits. Activities often include attending events, organizing community gatherings, reading literature about rabbits, or donating to animal welfare organizations like the House Rabbit Society, which focuses on rescuing abandoned rabbits and educating the public about their care. The European rabbit, the only domesticated species, is commonly recognized, and the day serves as a reminder of the ecological impact of rabbit populations, particularly in regions like Australia. Celebrants may also share bunny pictures on social media using hashtags like #InternationalRabbitDay.