What it is and when it appears
The pine processionary is the caterpillar of a moth that lives in pine woods, which are very common in Mallorca. In autumn it builds white, cotton-like nests in pine branches.
The riskiest period is usually late winter to spring, when the caterpillars come down to the ground in a line (hence the name) to bury themselves. After mild winters they can appear earlier.
Why it is dangerous
The caterpillars are covered in stinging hairs that lodge in skin and mucous membranes. Curious dogs sniff or lick them, and contact with the tongue and mouth can cause a very serious reaction within a short time.
Cats can be affected too, although they tend to keep away. In people, especially children, it causes itching and irritation.
Warning signs
If your pet has touched a caterpillar or a nest, it may show:
- Sudden, heavy drooling.
- A swollen, red or darkened tongue.
- Pawing at the mouth or rubbing it on the ground.
- Vomiting, restlessness or difficulty breathing.
What to do
It is an emergency: call and go to the nearest vet as soon as possible. On the way you can rinse the mouth with plenty of water, without rubbing, so the hairs do not go deeper. Never touch the caterpillars with bare hands.
Our map lists the vets in every town so you can find the closest one.
How to prevent it
A few habits greatly reduce the risk during the season:
- Avoid walking under pines from late winter to spring, or keep your dog on a lead and watch it closely.
- Look out for white nests in branches and lines of caterpillars on the ground.
- If you have pines at home, ask your town council or an authorised company about treating them.
- Report nests in parks or walking areas to the town council.
