Toby Keith Oldest Dog. We now know who is the oldest living dog in the world, according to guinness world records: Bluey was obtained as a puppy in 1910 and worked among cattle and sheep for nearly 20 years before being put to sleep on 14 november 1939 aged 29 years 5 months.
Tobykeith, the 21 year old dog,. That distinction is held by bluey, an australian cattle dog who lived to the ripe old age of.