The cute Terrier mix recently celebrated his 28th birthday - that's 196 in dog years.
Max's owner thinks he's the oldest dog in the world.
She sent the Guinness World Records his birth certificate and vet records, but so far, she hasn't received a response.
"He loves to just lounge around the house. He's like an elderly person. He's set in his ways. Everything has been documented and notarized, so I am just waiting to hear something, because I don't want him to pass and not be recognized," said owner Janelle DeRouen.
The title of "World's Oldest Dog" used to belong to a 21-year-old dachshund from New York, but she has since died.