Fans commemorated Yeontan, BTS V's pet dog, on his birthday through donation activities. September 7 marked Yeontan's 8th birthday, and fans expressed deep love by considering Yeontan as the 8th member of BTS. Yeontan was known to have poor health since the time of adoption.

In an interview with a media outlet in December 2021, V expressed his wish to write a card to Yeontan. He said, "Yeontan has had health issues since he was born. I'm very grateful that he has endured and stayed alive. I hope we can make fun memories together for the rest of his life, and I want to see him grow up." This statement shows V's affectionate feelings toward Yeontan.

In December 2024, V announced on his Instagram that Yeontan had passed away. He shared, "Actually, the reason I'm posting this today is because Yeontan recently took a long journey to doggy heaven," bringing sadness to fans. Yeontan was recognized as one of the "most famous celebrity pets" alongside Ariana Grande's dog, Taylor Swift's cat, and Tom Holland's dog. British media Metro and American CBS Entertainment Tonight host Denny Directo referred to Yeontan as the most famous dog in the world.

On Yeontan's birthday, September 7, the hashtag #ForeverWithYeontan ranked first in worldwide real-time trends, and "tannie" ranked second, showing that fans still remember Yeontan. Fans carried out various donation activities to celebrate Yeontan's birthday.

V's global fanbase, V Union, and the UK fanbase KTH_UK donated to the UK animal rescue organization RSPCA, which focuses on animal rescue, rehabilitation, and treatment, in memory of Yeontan. V's Spanish fanbase BTS V Spain donated to the Vegan Sanctuary Foundation, Spain's first animal protection organization, honoring memories with Yeontan.

The Indian fanbase Taehyung India donated to the AWCS foundation to support animals affected by floods, and Brazil's V CREW BR also made donations to the animal protection group CEL in celebration of Yeontan's birthday. Myanmar's fanbase Kim Taehyung Myanmar donated to the Oasis Shelter, which cares for pets.

These donation activities reflect fans' way of remembering and honoring Yeontan, showing their desire to continue the love and memories Yeontan left behind. By donating to animal protection organizations worldwide on Yeontan's birthday, fans made his memory even more meaningful. Yeontan remains a special presence to BTS and their fans, and these donation efforts have further solidified that love and memory.