Can a nine year old lose a K9 tooth?

Yes, a nine-year-old can lose a canine tooth, also known as a K9 tooth. Typically, children begin to lose their primary teeth, including canine teeth, between the ages of 6 and 12. The exact timing can vary from child to child, but it is normal for a nine-year-old to experience this process. If there are concerns about the timing or health of the teeth, it's best to consult a dentist.