{
  "slug": "crocodile-attack",
  "question": "What are the odds of a fatal crocodile or alligator attack?",
  "quick_answer": "For a typical adult, the lifetime risk of a fatal crocodile or alligator attack is tiny, about 1 in 338,000 (global adult, a documented lower bound). Crocodilians actually cause more large-predator human deaths than sharks or bears, roughly 251 documented worldwide each year rather than the few dozen most people imagine, but almost all victims are subsistence farmers and fishers in Africa and Asia.\n",
  "category": "animal",
  "no_reliable_estimate": false,
  "perceived": {
    "description": "Crocodilians occupy a specific corner of the public fear landscape — vivid enough to be taken seriously, yet mentally filed under \"exotic hazard\" that applies only to people on wildlife documentaries or Australian tourists who ignore warning signs. The animals responsible for the largest number of large-predator human fatalities globally are not bears, sharks, or mountain lions; they are Nile and saltwater crocodiles, and most of their victims are subsistence farmers and fishers in Africa and Southeast Asia whose deaths rarely appear in international news.\n",
    "rough_estimate": "most people in temperate countries would guess crocodile deaths are in the same range as shark deaths — a few dozen worldwide per year",
    "kind": "intuition"
  },
  "native": {
    "display": "~251 documented deaths per year globally (CrocAttack database, 2015–2024; a lower bound — attacks in much of Africa go unrecorded)",
    "numerator": 251,
    "denominator": 5000000000,
    "unit": "per year",
    "population": "global adults"
  },
  "normalized": {
    "lifetime_us_adult": 0.00000296,
    "display": "1 in ~338,000 lifetime (global adult; documented rate, a lower bound)",
    "log_value": -5.53,
    "assumptions": "The CrocAttack database (successor to CrocBITE, the most comprehensive open-source crocodilian attack database) lists per-country attack and fatality counts for 2015–2024. Summing the country tables gives roughly 2,509 documented human fatalities over the decade — about 251 per year. The database explicitly warns that this is a documented lower bound: \"It is likely that a large proportion of the attacks that have occurred in Africa were not recorded,\" and it directs readers to treat most African figures as \"largely incomplete.\" Neither cited source quantifies the underreporting correction, so no single \"true\" global rate is stated. Point estimate uses the documented rate: 251 / 5,000,000,000 = 5.0 × 10⁻⁸ per year. Compounded over 59 years: 1 − (1 − 5.0e-8)^59 ≈ 2.96 × 10⁻⁶, i.e. roughly 1 in 338,000. The uncertainty band's low end is the documented rate itself (the floor); the high end is an illustrative scenario in which unrecorded incidents roughly double the true count (~500/year → 5.9e-6 lifetime) — this factor is not a source figure, only a bound on the documented lower estimate.\n",
    "uncertainty": {
      "low": 0.0000029,
      "high": 0.0000059
    },
    "scope": "global_adult_lifetime"
  },
  "sources": [
    {
      "url": "https://crocattack.org/2015-2024attackstats/",
      "title": "2015 – 2024 Worldwide Crocodilian Attack Statistics",
      "publisher": "CrocAttack — Worldwide Crocodilian Attack Database",
      "source_type": "reputable_reference",
      "statistic": "Per-country documented attack and fatality counts for 2015–2024; summed, ~4,989 documented attacks and ~2,509 fatalities over the decade (~251 deaths/year documented); African attacks 'largely incomplete' and underreported",
      "excerpt": "\"It is likely that a large proportion of the attacks that have occurred in Africa were not recorded. The level of record-keeping varies by country, but is lacking in most areas... Therefore, it is important to view the data for most African nations as largely incomplete.\" The page lists documented 2015–2024 counts by country (e.g. Indonesia: 1167 attacks, 556 fatal; India: 768 attacks, 317 fatal; Papua New Guinea: 584 attacks, 369 fatal) but states no worldwide total, no per-year average, and no expert estimate of overall global fatalities.\n",
      "source_date": "2025-09-30",
      "source_accessed": "2026-04-24",
      "archive_url": "http://web.archive.org/web/20260416162609/https://crocattack.org/2015-2024attackstats/",
      "calculation_notes": "Summing the CrocAttack per-country tables for 2015–2024 gives ~2,509 documented human fatalities over the decade, or ~251/year (~4,989 documented attacks total). Point-estimate annual rate: 251 / 5,000,000,000 = 5.0e-8. Compounded over 59 years: 1 - (1 - 5.0e-8)^59 ≈ 2.96e-6, or ~1 in 338,000. This is a documented lower bound: the source explicitly flags African data as \"largely incomplete,\" and neither cited source quantifies the underreporting correction. uncertainty.low = the documented rate itself (2.9e-6, the floor); uncertainty.high (5.9e-6) is an illustrative doubling for unrecorded incidents, not a source-stated figure.\n",
      "independence_note": "CrocAttack draws from media surveillance, field reports, and national wildlife agency data across multiple countries, independently of any single government reporting pipeline.\n"
    },
    {
      "url": "https://www.iucncsg.org/pages/Crocodilian-Attacks.html",
      "title": "Crocodilian Attacks",
      "publisher": "IUCN Crocodile Specialist Group",
      "source_type": "reputable_reference",
      "statistic": "Saltwater crocodile leads in total attacks (1,350 vs 1,005 for Nile, 2010–2020); Nile crocodile has a higher fatality rate (696 vs 668 fatal); underreporting likely significant",
      "excerpt": "CrocBITE data for total attacks by species for the period 2010–2020 show the saltwater crocodile (C. porosus) with 1,350 total attacks (668 fatal) and the Nile crocodile (C. niloticus) with 1,005 total attacks (696 fatal). \"The incidence of crocodilian attacks on humans in many countries is challenging to quantify. It is likely that many more people are attacked than is reported, as many attacks occur in remote areas.\"\n",
      "source_date": "2023-01-01",
      "source_accessed": "2026-04-24",
      "archive_url": "http://web.archive.org/web/20260403160543/https://www.iucncsg.org/pages/Crocodilian-Attacks.html",
      "calculation_notes": "The IUCN CSG's CrocBITE data (2010–2020) shows 1,350 saltwater crocodile attacks (668 fatal) and 1,005 Nile crocodile attacks (696 fatal). The page's statement that \"many more people are attacked than is reported, as many attacks occur in remote areas\" corroborates the CrocAttack database's own African-underreporting caveat — establishing that the documented ~251/year is a lower bound. Neither source quantifies the true global total, so the headline uses the documented rate rather than an invented correction.\n",
      "independence_note": "IUCN CSG is an independent scientific specialist group operating under the IUCN Species Survival Commission; its attack data is collected separately from the CrocAttack media-surveillance database.\n"
    }
  ],
  "comparison_anchors": [
    {
      "label": "Death by shark attack (lifetime, US adult)",
      "lifetime_us_adult": 1.76e-7
    },
    {
      "label": "Death by bear attack (lifetime, US adult)",
      "lifetime_us_adult": 2.64e-7
    },
    {
      "label": "Death by hippo attack (lifetime, global adult)",
      "lifetime_us_adult": 0.00000177
    }
  ],
  "regional_breakdown": [
    {
      "region": "Sub-Saharan Africa (resident near Nile crocodile habitat)",
      "probability": 0.00015,
      "notes": "Concentrated in Tanzania, Mozambique, Uganda, South Sudan, and DRC; the Nile crocodile's range overlaps heavily with subsistence fishing and river-crossing communities."
    },
    {
      "region": "Northern Australia / Indonesia / Papua New Guinea (saltwater crocodile range)",
      "probability": 0.00003,
      "notes": "Saltwater crocodile is the largest living reptile and highly aggressive; remote communities in coastal and riverine areas face significant risk."
    },
    {
      "region": "Florida resident (American alligator)",
      "probability": 2e-7,
      "notes": "Florida averages ~6 unprovoked alligator bites/year, of which fatalities average <1/year; alligator attacks are rarely fatal compared to Nile or saltwater crocodile encounters."
    },
    {
      "region": "Resident outside crocodilian range",
      "probability": 1e-9,
      "notes": "Captive or zoo incidents only; effectively zero wild encounter risk."
    }
  ],
  "short_label": "Crocodile attack",
  "myth_framing": "underrated",
  "outcome_severity": "fatal",
  "exposure_pattern": "acute",
  "outcome_type": "death",
  "valence": "negative",
  "caveats": "The global average figure is almost entirely irrelevant to the personal risk of a US adult or most Western European adults. Nile and saltwater crocodile fatalities are overwhelmingly concentrated among subsistence communities living and working along African river systems and Southeast Asian coastlines and deltas. Florida alligator attacks average roughly 6 unprovoked bites per year and are rarely fatal — alligators and crocodiles have very different attack profiles. The 1 in ~338,000 lifetime figure is a documented-rate global average and a lower bound (much of Africa is underrecorded); a US adult living far from crocodilian habitat faces a lifetime risk several orders of magnitude lower than this. A fisherman on Lake Victoria or the Rufiji River faces a risk several orders of magnitude higher.\n",
  "quality_score": {
    "d1": 3,
    "d2": 5,
    "d3": 5,
    "d4": 4,
    "d5": 4,
    "d6": 4,
    "d7": 3,
    "d8": 4,
    "avg": 4,
    "scored_by": "extracted-from-transcript",
    "scored_at": "2026-05-03",
    "methodology_version": "1.0"
  },
  "reviewer": "8d-eval-2026-05-16",
  "last_reviewed": "2026-05-16",
  "reviewed": true,
  "generated_at": "2026-04-24",
  "image": {
    "alt": "A stylized crocodile eye and snout emerging from flat water, minimal flat vector illustration in muted olive and grey tones."
  },
  "attribution": "Likelier — https://likelier.app",
  "license": "https://creativecommons.org/licenses/by-sa/4.0/",
  "support": "https://buymeacoffee.com/kgluszczyk?via=likelier&utm_content=api-fear-single",
  "canonical_url": "https://likelier.app/crocodile-attack"
}