What 31 year old dog died?

Excuse me, could you clarify something for me? I've come across a rather puzzling mention, and I'm rather intrigued. It says here that a 31-year-old dog has passed away. I'm aware that dogs typically have much shorter lifespans than humans, so this statement seems rather unusual. Could you possibly explain what this means? Is it a reference to a particularly notable dog, perhaps a breed known for its longer lifespan, or is there some other explanation behind this? I'm just trying to wrap my head around this, as it seems quite unusual.