La pine processionary It is once again in the spotlight for veterinarians in Spain, who are already registering cases this season. the first cases of dogs affected by its sting in various provinces along the Mediterranean coast. Rising temperatures and milder winters are causing these caterpillars to descend to the ground earlier, increasing the risk period for pets.
In places like Alicante and the Region of MurciaThe professionals confirm an early presence of the pest and a Growing concern about the harm it causes to dogsThese symptoms range from severe tongue inflammation to necrosis and serious respiratory problems. Although this is a recurring phenomenon each year, veterinarians emphasize the importance of remaining vigilant and remind owners that their reaction time can make all the difference.
A common plague in the Mediterranean that arrives ahead of schedule
Los official veterinary colleges Provinces such as Alicante and Murcia have confirmed that they are already providing care. numerous cases of dogs with symptoms consistent with processionary caterpillar infestation after walk through pine forests or wooded areas nearby. In the case of Alicante, the College of Veterinarians (Icoval) indicates that the appearance of the caterpillar, although usually frequent in the first months of the year, It has been brought forward slightly this season.
In the Region of Murcia, the situation is similar. The Official College of Veterinarians explains that, due to the warmer climate of the southeastern peninsulaThe processionary caterpillar cycle tends to start earlier and already The first serious cases in dogs have been reported. through ingestion or simple contact with the larvae. Furthermore, experts point out that these caterpillars are not only found in wooded areas, but are also beginning to appear in... residential areas and urban environments with pine trees.
In statements from various professional representatives, it is emphasized that this advance requires clinicians to be especially attentive for several more weeksincorporating the possibility of exposure to processionary caterpillars into the diagnosis of any dog that presents compatible symptoms and has recently been outdoors, especially if it has walked through pine forests, parks with conifers, or hiking trails.
The pine processionary caterpillar (Thaumetopoea pityocampa) is a annual life cycle lepidopteran Widespread in the Mediterranean basin. In provinces like Alicante, the cycle usually begins in late September and early October, when the females lay their eggs on the tenderest pine needles. The larvae feed during the following weeks and, as autumn progresses, develop their characteristic adult forms. white “bags” in the treetopswhich serve as a refuge from the cold and predators.
From mid-January and well into February —or even earlier, if the winter is mild—, the caterpillars leave those nests and They descend to the ground in rows.They advance one behind the other, which gives them the common name of processionary caterpillar. This period, which can last almost a month, is the time of greatest risk for dogs, as they are often attracted to these "processions" and approach to sniff or even bite them. Later, in spring, the caterpillars bury themselves to form the pupae, and in summer they emerge as moths.
Why are processionary caterpillars so dangerous for dogs?
The problem isn't the caterpillar itself, but the stinging hairs that cover its bodyThese trichomes contain toxic substances capable of causing very intense reactions upon minimal contact. The dog doesn't even need to bite it. It only takes smelling it up close or stepping into a contaminated area. so that the hairs become embedded in the skin or mucous membranes and trigger a severe inflammatory response.
Veterinarians describe a series of very characteristic symptoms after contact with the processionary caterpillar. Among the most common are the sudden hypersalivationVisible swelling of the tongue and lips, intense redness of the mouth, oral ulcersVomiting and intense itching, which leads the animal to desperately rub itself against the ground or its paws. In many cases, other symptoms may also appear. eye injuries If the stinging hairs come into contact with the eyes, there is a risk of serious damage to the cornea.
In the most severe cases, the inflammatory reaction can progress to cause necrosis of the tongue or other areas of the mouthwith tissue loss and risk of infection. Some veterinarians in the Region of Murcia report cases where it has been necessary to perform surgery and amputate part of the tongue to save the dog's life. Furthermore, if the exposure is high or the animal is particularly sensitive, the effects can extend to the respiratory tractcausing difficulty breathing, generalized edema, or even anaphylactic-type reactions that endanger the animal's life.
La clinical evolution It largely depends on the time elapsed between contact and veterinary care, as well as the number of urticating hairs that remain attached. Prompt treatment can significantly limit the extent of the lesions, while delays promote the progression of necrosis and increase the risk of serious complications. Therefore, professionals emphasize that owners should be well-versed in the warning signs and act promptly without waiting for the situation to improve on its own.
It is worth remembering that, in addition to dogs, the processionary caterpillar also poses a risk to peopleThis is especially important for children and allergy sufferers. Even simple contact with caterpillars or debris from their nests can cause skin irritations, rashes, respiratory problems, or allergic reactions of varying severity. Veterinary associations therefore emphasize that prevention campaigns aim not only to protect pets but also to enhance the safety of families who frequent the countryside or pine forests.
What to do if you suspect your dog has come into contact with processionary caterpillars
At the slightest suspicion of contact, veterinarians throughout the Mediterranean region agree on one message: Not waste timeIf the dog returns from a walk with a swollen tongue, excessive salivation, vomiting, visible lesions in the mouth, or scratches his snout We must insist, acting quickly but also with some caution, to avoid personal exposure to stinging hairs.
Veterinary colleges recommend, as a first step, Wash the affected area immediately. (mouth, tongue, lips, snout and, if necessary, paws) with plenty of physiological saline or clean water, if possible slightly bicarbonate, and always without rubbingRubbing can break the hairs and further disperse the toxin, so ideally, let the water wash away the trichomes. It is important that the tutor uses gloves and appropriate protection to prevent the hairs from coming into contact with your skin.
Once this first wash has been completed, the instruction is go to a veterinary center as soon as possibleEven if the injuries appear minor, the veterinarian will be able to assess the severity of the reaction, administer medication to control pain and inflammation, perform more thorough cleanings (including the eyes and oral cavity), and decide whether it is necessary to hospitalize the animal to closely monitor its progress.
Experts insist that the owner should not attempt pull the caterpillars Do not handle them directly with your hands or without protection, as this increases the risk of injury to both the person and the dog. Administering medication without veterinary guidance is also not recommended, as it could mask important symptoms or interfere with treatment administered at the clinic.
In these weeks of increased incidence, professional associations have asked clinical veterinarians to, in response any signal compatible with exposure to processionary caterpillarsEven if it is mild, assess the case with caution, apply measures of local decontamination (such as eye and mouth washes) and record the incidents to facilitate monitoring of the infestation throughout the season. This data collection allows for the identification of the most problematic areas and strengthens public awareness where it is most needed.
Prevention tips for walks and risk areas
The best tool against the processionary caterpillar remains the preventionVeterinarians recommend that dog owners, during the winter months and early spring, Avoid walking through pine forests and areas with a clear presence of processionary caterpillar nests. in the treetops, especially on sunny and mild days, when caterpillars tend to descend more frequently.
When it is not possible to change the route, or it involves regular mountain trailsIt is advisable to bring the dog always tied And, if the animal has a tendency to sniff and bite everything it finds, consider even using... muzzle To prevent direct access to the caterpillars, keeping the dog under control helps prevent it from approaching the typical "processions" that form on the ground, at the base of pine trees, or on dirt paths and areas of leaf litter.
In collaboration with environmental authorities, some veterinary colleges have promoted information campaigns on social media and the placement of warning signs These signs are located on hiking trails and in recreational areas frequented by hikers and athletes. They warn of the presence of processionary caterpillars, recommend extra vigilance, keep dogs on leashes, and also caution families with children and allergy sufferers about the danger of touching the caterpillars or their nests.
In addition to carefully choosing walking areas, it is advisable that, upon returning home, the owner Routinely check the dog's mouth, snout, and pawsEspecially if your dog has walked near pine trees or been sniffing the ground. Although remains aren't always visible to the naked eye, this check can help locate them in time. incipient lesions or signs of irritation, allowing you to go to the vet before the condition worsens.
The professionals also highlight the importance of local councils and homeowners' associations with green areas and pine trees Consider environmentally friendly pest control measures, as well as information campaigns for residents. Although total eradication is very difficult, reducing the density of nests and providing advance notice of the most affected areas helps minimize incidents involving pets and people.
However, Spanish veterinarians agree that the The pine processionary caterpillar will continue to be a recurring risk each seasonespecially in the Mediterranean region. That's why they insist on the need to combine information, prevention and rapid action At the first sign of symptoms. With a little planning of walking routes, keeping dogs under control, and knowing how to react if something goes wrong, serious cases associated with this common plague in our pine forests can be significantly reduced.
