Viper bite in dogs in Spain: what to do
5-year-old Podenco returning from hunting in the hills with marked, progressing facial swelling, two puncture marks on the muzzle, severe pain and petechiae on the oral mucosa. The owners saw a viper.
What is the most appropriate management?
chevron_right Show answer and explanation
A. Hospitalise with fluids and opioid analgesia, monitor airway, platelets, coagulation and ECG, and consider antivenom given the systemic signs and progression
Correct. Iberian vipers (Vipera latastei, V. aspis, V. seoanei) cause local oedema, pain, hypotension, thrombocytopenia, coagulopathy and arrhythmias. Facial oedema can obstruct the airway. With systemic signs or progressive oedema, antivenom against European vipers is indicated.
B. Apply ice and a compression bandage, make an incision over the bite and suck out the venom
These are traditional, discouraged measures: they do not remove venom, they increase tissue damage and infection, and a compression bandage on the head is dangerous.
C. Dexamethasone and amoxicillin-clavulanate, and discharge if walking well
Corticosteroids have not been shown to improve the outcome of envenomation and antibiotics are not needed routinely. Early discharge is a mistake: systemic signs can worsen during the first 24 hours.
D. Fresh frozen plasma to correct the coagulopathy instead of antivenom
While venom is circulating, the factors provided keep being consumed and plasma is of little use. The treatment for venom-induced coagulopathy is antivenom; plasma or blood is reserved for severe bleeding.
lightbulb Key takeaway
In Spain viper bites are most common in spring and summer, in hunting or country dogs, and almost always on the head or forelimbs. Keep the dog under observation for at least 24 hours even if it looks mild, with opioid analgesia and platelet and coagulation checks. The available antivenom is a human product and is used under the cascade.
Test yourself with 10 random questions
Emergency and critical care · 100 questions, a different test every time
Related questions
Updated: October 31, 2026 · Educational content for veterinary professionals. It does not replace current clinical guidelines or the judgement of the attending veterinarian.