Hidden dangers in the Spanish grass: Why extra vigilance for walkers and pet owners is needed in 2026

After such a mild winter and a remarkably damp beginning to the year, those taking advantage of the warm spring weather in Spain need to be extra vigilant in 2026. The weather this year has created a perfect breeding ground for parasites across the Iberian Peninsula. Ticks are active much earlier than usual, moving through the undergrowth in search of a host. Warmer temperatures combined with high humidity levels mean that areas previously considered safe are now home to these tiny arachnids. Nature lovers are now finding that the traditional “low-risk” months of early spring are now just as dangerous as the height of summer.

Rising threats to human and animal health

Dangerous pathogens carried by these creatures pose a serious health risk to both humans and their four-legged companions. Lyme disease remains the most well-known threat, but other conditions like Crimean-Congo haemorrhagic fever are increasingly present in rural Spain. Hikers, campers, and anyone walking their dogs in tall grass face a high risk of an unwanted encounter. Even beaches and urban areas can pose risks as other dog walkers who have taken their pets for a run in the country can inadvertently bring ticks into the towns.

Regional health authorities in Aragon and Andalucia have recently warned that the density of these parasites has already reached levels rarely seen in previous decades.

Harrowing case of 25-year-old Cristina Romaña

Cristina Romaña’s story serves as a chilling reminder of how devastating these infections can be. This young Spanish woman contracted a severe form of Lyme disease after interacting with deer in Japan, leading to a medical nightmare that saw her incorrectly diagnosed with Mpox. Months of agony followed as the bacteria attacked her central nervous system, eventually forcing her to seek expensive, specialised treatment in Germany. Her experience goes to show the complexity of diagnosing tick-borne illnesses and the life-altering consequences of a single bite. She has already spent tens of thousands of euros on care, demonstrating the financial and emotional toll these tiny insects can inflict.

Growing risk within Spanish borders

❤️‍🩹📝 Salud lanza recomendaciones para evitar el contagio de la #EnfermedadDeLyme, que se transmite por la picadura de garrapatas infectadas.

📆 Este viernes se celebra el Día Mundial de esta dolencia, que en la Región está incluida como Enfermedad de Declaración Obligatoria… pic.twitter.com/AHaznxepR4

— Gobierno de la Región de Murcia (@regiondemurcia) April 30, 2026

Evidence suggests similar scenarios are becoming increasingly plausible within Spain’s own borders as tick populations expand. Forestry experts in regions like Madrid have sounded the alarm about the rising prevalence of infected ticks in local parks and mountains. Deer, wild boar, and even small rodents act as carriers, keeping the danger present in the environment. Ignoring the risk is no longer an option, as the danger now occupies a much larger portion of the calendar year.

Essential safety measures for the Spanish countryside

Protective measures should be the priority for anyone planning a weekend trek or a simple walk in the woods. Wearing light-coloured trousers makes it easier to spot dark specks crawling up your socks before they reach your skin. Tucking trousers into socks may look unfashionable, but it creates a physical barrier that prevents these parasites from reaching your ankles. Staying in the centre of marked trails rather than wandering into deep brush is another simple way to reduce exposure during any excursion.

Vital post-walk checks for you and your dog

Post-walk inspections are compulsory once you return home, particularly for those with pets. Dogs often act as a bridge, carrying ticks from the brush into your living room or bedroom. Owners must check “hot spots” such as the ears, paw pads, and armpits where parasites prefer to hide.

Watch out for ticks on your pets now that the weather is heating up in Spain

A tick will burrow its head into the skin of its victim, whether dog, cat or human, so simply picking the tick from the skin is not an option, as it will likely be decapitated, leaving the head inside the skin and causing a rather nasty infection. To remove a tick, use fine-tipped tweezers to grasp it as close to the skin as possible and pull upward with steady, even pressure. Do not twist or squeeze the tick, as this can break off the head leaving it irretrievable below the skin. Clean the area with soap and water or medical alcohol afterward. Seek medical assistance if you have any doubts.