Seven per cent of pet dogs – mostly small, “toy” breeds – have doubled-up teeth, reminiscent of sharks’ mouths. The condition, known as persistent deciduous teeth, occurs when the dog’s baby teeth ...

Q: My dog still has a baby tooth. Her adult tooth is also coming in. My vet wants to remove the tooth when she is spayed. Is there any reason I shouldn’t leave it alone? Like people, dogs lose their ...