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.

Familiar farm animal, but in the UK cows kill more people each year than any other animal — 4-7 deaths annually. Often when walkers cross fields with calves.

Cows with calves are extremely protective. Bulls in fields with public rights-of-way are a known UK hazard. Most attacks involve dog-walkers — cows perceive dogs as a threat.

Fields and pastures across all of Europe. Particularly relevant in UK, Ireland, France, Germany where rights-of-way cross farmland.

Normally docile but unpredictable. Charges with horns lowered. UK Health & Safety advises: release dogs immediately if approached.

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.

Smaller and darker than European hornet, with yellow legs. Invaded Europe via France in 2004 and now spread across France, Spain, Portugal, Italy, UK, Germany, Belgium.

Highly aggressive when nests are disturbed. Several confirmed deaths in France and Spain from anaphylactic shock. Devastating to honey bee colonies — kills up to 50 bees per day per hornet.

Builds large nests high in trees — often only spotted in autumn when leaves fall.

Hovers in front of beehives picking off returning bees. Defends its nest aggressively at 5 m distance — silent, fast, persistent.

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.

Small sandy-brown fish — up to 15 cm — that buries itself in shallow sand with only its eyes and dorsal spine showing. Found at swimming depth.

Stepping on it drives a venomous spine into the foot, causing severe pain for 2–24 hours. Rarely fatal but ER visits common — UK alone reports 1,000+ stings per year.

Sandy shallows of the Atlantic and Mediterranean coasts of France, UK, Ireland, Spain, Portugal, Italy.

Buries in sand at low tide. Strikes only defensively. Most stings occur on popular beaches in summer at low water.

Largest dolphin — up to 9 m and 6 tons. Apex predator of the oceans. Since 2020, a pod off Iberia has been deliberately ramming and sinking sailboats.

No fatal attacks on humans in the wild ever recorded — but as of 2024, over 700 boat ramming incidents and 4 sailboats sunk off Spain and Portugal. Direct human risk: drowning during shipwreck.

All European waters — Atlantic, Bay of Biscay, Mediterranean (rare), Norwegian Sea, North Sea. Iberian pod active off Spain, Portugal.

Highly intelligent, social — pods of 5-30. Teach each other behaviours culturally. The boat-ramming is being learned by new generations.

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.

Largest European deer — stags up to 240 kg with massive antlers. Found from Scotland to the Carpathians.

Hundreds of vehicle collisions yearly across Europe. Stags during the September–October rut occasionally attack humans, dogs, even cars — antlers are deadly.

Forests, moors, and parklands across Europe.

Lives in single-sex herds outside the rut. Stags roar to attract hinds; the sound carries for kilometres.

World's largest jellyfish — bell up to 2 m wide, tentacles up to 30 m long. Russet-brown 'mane' of dense tentacles. Drifts on Atlantic currents to Britain and Ireland.

Sting causes severe burning pain, blistering, and in rare cases anaphylaxis or heart problems. Beach closures in Ireland, UK, and Norway each summer.

Cold waters of the North Atlantic — Norway, Iceland, UK, Ireland, Baltic. Drifts south in late summer.

Slow drifter — moved by currents and tides. Can sting through thin clothing. Even detached tentacles remain dangerous.

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.

Larger and more muscular than a domestic cat — up to 8 kg. Distinguished by thick black-ringed tail. Critically endangered in Scotland (~30 left); stronger populations in Carpathians, Iberia.

Not actively dangerous to humans, but a wildcat will inflict serious lacerations if cornered or trapped. Notorious for fierce fighting spirit — even more aggressive than other wild cats.

Forests, scrubland, and rocky terrain across continental Europe and a few Scottish glens.

Solitary, nocturnal, secretive. Hunts rodents and rabbits. Will not interbreed willingly but hybridizes with domestic cats — driving the Scottish population to extinction.