At the time, the vet said she was 7 years old.
That would make her 25, or 175 in dog years.
Misty's owner says her secret to long life is a lot of love.
He is planning to submit Misty for consideration in the Guinness Book of World Records.
Canadian dog possibly oldest in world at 175
NOVA SCOTIA, Canada Misty was adopted from a foster home 18 years ago.
