Apple has 3 retained canine teeth, and all 4 of her adult canine teeth are in, and she's 9 1/2 months old...My vet said not to worry about it, 'till she is a year old...Then they have to come out...Since teeth are his specialty, I'm thinking this is probably good advice...At a year old, if he has to extract those teeth, he will clean and scale them, and do whatever is necessary for a nice healthy mouth