The oldest dog that has been reliably documented was an Australian cattle-dog named Bluey. He was put to sleep at the age of 29 years and 5 months!

• 世界上最老的狗，据可靠文献记载，是一条澳大利亚的一条叫作博鲁的牧羊犬，他一共生存了29年零5个月。