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.

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.

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.

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 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.

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.

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.

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.