Direct answer
Call your veterinarian when teething is accompanied by facial swelling, significant or persistent bleeding, severe pain, inability to eat or drink, trauma, a badly positioned tooth, or a baby tooth that remains beside the adult tooth.
Eating should remain possible
Mild tenderness can change how a puppy approaches a hard biscuit, but refusing food, crying when chewing, dropping food repeatedly, or avoiding water warrants attention.
Check for asymmetry and swelling
One-sided facial swelling, a tooth pointing in an unusual direction, persistent bleeding, or a strong mouth odor is not a routine teething milestone.
Retained teeth matter
Sometimes a baby tooth remains while the adult tooth erupts beside it. Crowding can affect the bite and trap debris, so a veterinary dental check is useful.
What to avoid
Keep the response gentle.
Do not give human pain medicine or try to extract a tooth at home.
Safety boundary
When to get more help.
Urgent veterinary advice is needed for significant bleeding, trauma, severe pain, inability to eat, or facial swelling.
References
Evidence and professional guidance
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