How old is the world's oldest dog?
In April 2023, the oldest dog in the world - officially recognised by the Guiness World Records - is Bobi: a 30-year old dog, who lives in Portugal.
Instruction: How old is the world's oldest dog?
Context: 
Response: In April 2023, the oldest dog in the world - officially recognised by the Guiness World Records - is Bobi: a 30-year old dog, who lives in Portugal.