My 3-month-old Shiba Inu hid under the sofa, acted aggressively and bit people. I hit it once with a broomstick and struck its teeth. One of the two upper fangs broke halfway and the red interior is visible, while the other is loose and hanging from the gum. I gave amoxicillin and used an oral antibacterial spray for two days. I read online that adult teeth will grow in later and that the baby teeth have no roots. How should I handle this so the puppy can grow normal permanent teeth?

At three months old the puppy is still in the teething stage. After the baby teeth fall out naturally, permanent teeth will grow in, which is a normal replacement process. Usually dogs begin teething around 4 months of age, finish replacing their teeth by 6 months, and have a full set of permanent teeth after 8 months.

Based on your description, the two fangs were broken by external force. If the gum tissue and tooth nerves suffer a serious infection or damage, it may hinder the eruption of the new permanent teeth. However, as long as the tooth root is still present, a new tooth will grow in. You should keep the injured tooth and mouth clean and free of bacteria, and supplement calcium daily to support the nutrition the teeth need. There is no better alternative at this point. If you are very concerned, we recommend taking the dog to a veterinary hospital for a dental examination and treatment.