The cause of Yeontan's passing has not been explicitly disclosed. However, there are some indications and speculations based on available information:
Health Issues: Yeontan had been suffering from tracheal issues, which are common in small breeds like Pomeranians. These issues can cause significant breathing difficulties.
Heart Surgeries: V had previously revealed that Yeontan had undergone two unsuccessful heart surgeries. This suggests that Yeontan had ongoing health problems related to his heart.
Decomposition: TMZ reported that Yeontan's body was found in a badly decomposed state, indicating that he had been deceased for some time before being discovered.
Speculations: Fans and media have speculated that Yeontan's death might have been due to complications from his pre-existing health conditions, such as his heart issues and tracheal problems.
Despite these details, the exact cause of death has not been officially confirmed by V or any other reliable sources.