Dog that bites a person: rabies observation period
A 4-year-old dog, microchipped and vaccinated against rabies 2 years ago, has bitten a child on the hand in a park in Madrid. The child's family went to A&E and the dog's owner calls your clinic asking what to do.
What is the correct course of action?
chevron_right Show answer and explanation
A. Euthanise the dog and send the brain to the laboratory to rule out rabies
Euthanasia is not indicated in a healthy dog: the observation period rules out viral shedding at the time of the bite. It is reserved for animals with compatible signs or as decided by the health authority.
B. Revaccinate the dog against rabies immediately, which replaces observation
Vaccinating during observation is not indicated (it may confuse interpretation of possible reactions or signs) and does not replace the observation period required by law.
C. Since the dog is vaccinated, nothing further is needed
Although vaccination greatly reduces the risk, the regulations require observation of every animal that bites, vaccinated ones included. The risk in Spain is low, but the procedure is mandatory.
D. Place it under a veterinary observation period (generally 14 days), report the bite to the authorities and not vaccinate it during that period
Correct. A dog or cat shedding rabies virus in its saliva develops signs and dies within a few days. If it remains healthy at the end of observation, it was not transmitting the virus at the time of the bite. The exact timescales and procedure are set by each autonomous community.
lightbulb Key takeaway
The rabies observation period protects the bitten person: if the animal stays healthy, post-exposure prophylaxis can be avoided or stopped. Record the identification, vaccination status and checks on the certificate required by your community. If the animal falls ill or dies during observation, report it immediately.
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Updated: October 31, 2026 · Educational content for veterinary professionals. It does not replace current clinical guidelines or the judgement of the attending veterinarian.