Glossy black with 13 red spots on the back — hence its Italian name, malmignatte. Smaller than American black widow but with similar venom.

Alpha-latrotoxin causes severe muscle spasms, abdominal cramping, hypertension, and sweating ('latrodectism'). Antivenom available; before its development, mortality was 4–5%.

Dry steppes, vineyards, abandoned buildings, and stone piles across southern Europe and the Balkans.

Builds tangled webs near the ground. Female bites only when pressed against skin — typically when moving rocks or harvesting grapes.

Largest land predator in Europe. Males reach 350 kg. Mostly omnivorous; can outrun a horse over short distances and is an excellent swimmer and tree-climber when young.

Attacks rare but documented — about 10 fatal attacks per decade across Europe. Most occur when surprising a sow with cubs or a wounded individual.

Mountain forests of the Carpathians, Scandinavia, Balkans, Pyrenees, Alps, and Russian taiga.

Hibernates Nov–Mar in dens. Active at dawn and dusk. A sow defending cubs is the most dangerous scenario.

Small, dark tick — the primary disease vector in Europe. Despite being only 3–4 mm, kills more Europeans annually than any other animal.

Transmits Lyme borreliosis (200,000+ cases/year), tick-borne encephalitis (3,500+ cases/year, ~30 deaths), babesiosis, anaplasmosis. The TBE vaccine exists.

Forests, parks, tall grass, urban green spaces. Most active April–June and September–October.

Quests on grass tips and twigs, latching on contact. Seeks warm, moist body sites. Feeds for 3–7 days before dropping off.

Brown mosquito 5–7 mm — the typical 'house mosquito' across Europe. Native, not invasive — but increasingly dangerous as warming climate amplifies disease cycles.

Primary vector of West Nile virus in Europe. Italy alone logged 430 WNV cases and 27 deaths in summer 2025 — equal to all US cases for that year. Spain, Greece, France, Romania, Hungary all reporting outbreaks.

All of Europe except the far Arctic. Breeds in any standing water — gutters, water butts, flooded basements, urban drains.

Bites mostly at dusk and night. Females hibernate in basements/attics through winter. The lifecycle from egg to adult takes only 7–10 days in summer.

Up to 3.5 cm — Europe's largest social wasp. Yellow-brown with reddish-brown markings. Builds papery nests in tree hollows and attics.

A single sting is painful but rarely lethal. Multiple stings or anaphylactic shock can kill — about 30 deaths per year across Europe from wasp/hornet stings combined.

Forests, gardens, villages, and city parks across most of Europe except the far north.

Active by day. Hunts other insects — a colony eats 500 g of insects daily. Defends the nest collectively when disturbed within 5 m.

Grey or brown with a distinctive zigzag along the back, up to 80 cm. The northernmost venomous snake in the world — found inside the Arctic Circle in Lapland.

Hemotoxin causes pain and swelling. Around 0.5% of bites are fatal — usually only in children, the elderly, or those with allergies. About 7,500 bites per year across Europe.

Forests, bogs, heathland, and mountain meadows up to 3,000 m elevation.

Shy and retreating. Bites only when stepped on or cornered. Active by day in cool weather, by night in summer.

Common throughout Europe. Males reach 200 kg with razor-sharp tusks. Adapts well to humans — boars now roam parks of Berlin, Rome, and Barcelona; 3,000+ in Berlin alone.

Causes more wild-animal injuries in Europe than any predator. A sow defending piglets or a wounded male can disembowel within seconds.

Forests, fields, and increasingly suburban areas of major cities.

Lives in family groups (sounders). Active at dusk and night. Charges with tusks aimed at the legs and groin — capable of 40 km/h.

European wolf, smaller than its Russian or American cousins. Returning to Western Europe after centuries of absence — first wolves in Belgium since 1900 arrived in 2018.

Healthy wolves almost never attack humans — only 0–2 fatal attacks per decade in Europe. The real risk is rabid individuals; rabies is now mostly eliminated in Western Europe.

Forests and mountains of Eastern Europe, Scandinavia, the Balkans, and increasingly Germany, France, Belgium, and the Alps.

Hunts in packs. Highly intelligent and avoids humans. Communicates by howling over distances of 10 km.

Smallest European viper — only 40-50 cm. Critically endangered, with only ~3,500 mature adults left across Europe. Listed in IUCN Red List.

Mild venom — only one human fatality recorded in 200 years. Bites cause local pain but rarely systemic effects.

Mountain meadows and karst plateaus of France (Provence), Italy (Abruzzo), Hungary, Romania, Albania, Bosnia, North Macedonia, Greece, Ukraine (Carpathians).

Diurnal. Hunts grasshoppers, lizards. Hibernates 6 months underground. Despite habitat, almost no human encounters.

Most widespread carnivore in Europe. Adapts to cities — urban foxes are common in London, Berlin, Warsaw. Population in UK estimated at 357,000.

Direct attacks on adults are rare. The real danger is rabies (eastern Europe) and Echinococcus multilocularis — a tapeworm in fox feces that can kill humans if eggs are ingested.

Forests, fields, suburbs, and city centres across all of Europe.

Crepuscular and nocturnal. Solitary or family groups. Bold around humans where not hunted.

Up to 17 cm long. Yellow-orange body with dark bands. The largest centipede native to Europe, found across the Mediterranean.

Bite delivers venom via modified front legs (forcipules) — extremely painful, causes swelling, fever, occasionally vomiting. Not fatal but agonizing.

Under stones, logs, leaf litter across Italy, Spain, Portugal, Greece, France (south), Croatia, Cyprus, Malta, southern Ukraine, Crimea.

Nocturnal predator hunting insects, spiders, even small lizards. Aggressive when handled — flips and grabs with multiple legs.

Yellow-green spider, body up to 1.5 cm. Builds silk sacs in tall grass and grain fields. Spreading north with climate change.

Most painful bite of any European spider — described as a wasp sting. Causes nausea, swelling, occasionally fever lasting 24 hours. Not lethal in healthy adults.

Tall grass, grain fields, vineyards, and dry meadows of Central and Southern Europe.

Active at night. Females aggressively defend egg sacs in summer — most bites occur during harvest or grass-cutting.

Large (up to 25 mm) robust fly with iridescent eyes. Females need blood for eggs — slice skin with bladed mouthparts rather than piercing.

Bite is significantly more painful than mosquito — feels like a needle. Can transmit anthrax, tularemia, Lyme disease, and EIA. Allergic reactions cause anaphylaxis in rare cases.

Forests, pastures, near water across all of Europe — most common in Russia, Ukraine, Belarus, Poland, Scandinavia, Germany, France.

Active in hot, sunny weather. Attracted to dark-colored, moving objects. Persistent — keeps following until it bites.

Up to 1.5 m and 25 kg. Apex predator of European freshwater. Sharp backwards-pointing teeth give terrible wounds.

No deaths recorded but documented attacks on swimmers — bites legs and arms, mistaking them for prey. Wounds are deep and require stitches.

Lakes and slow rivers across all of Europe except Iberia and the far south. Common in Scandinavia, Baltics, Russia, Belarus, Poland, Germany.

Ambush predator — lurks among reeds. Strikes with explosive speed. Eats ducklings, water rats, and even small dogs.

Largest of the lynxes — up to 30 kg. Tufted ears, short tail, dense spotted coat. The most numerous large cat in Europe, found from the Pyrenees to the Urals.

Recorded attacks on humans are virtually nonexistent. Risk only from rabid individuals or trapped animals defending themselves.

Dense forests of Scandinavia, the Carpathians, the Balkans, and parts of the Alps.

Solitary, secretive, primarily nocturnal. Hunts roe deer, hares, and grouse by stalk-and-pounce. Territory of 20–450 km² per individual.