証拠の質 4.63/5
8次元のレビュー評価。基準は 品質ルーブリック 。各次元は1〜5で評価。
- D1 出典への根拠
- 5/5
- D2 出典の権威性
- 5/5
- D3 算術
- 5/5
- D4 不確実性
- 4/5
- D5 範囲
- 5/5
- D6 文章
- 4/5
- D7 認識の誠実性
- 4/5
- D8 注意事項の完全性
- 5/5
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- あなたの要因
認知リスク
ペットの飼い主は、犬や猫を航空機の貨物室に預けることを非常に心配する傾向があり、一握りの注目度の高い事故(2018年のユナイテッド航空のフレンチブルドッグの子犬の死亡、毎年の「ペットにとって最悪の航空会社」という見出し)がその恐怖を固定している。「自分のペットが航空貨物で死ぬ恐怖」だけを切り出した単独の調査は見つからなかったため、認識されているリスクは編集上の直感として記されている。心配する飼い主の大半が抱く大まかな感覚――リスクは現実だが日常的ではない――は、実際には数字に近い。人々が通常誤解するのは平均的な発生率ではなく、品種間の途方もない差である。
概算: 心配する飼い主の大半は、1便あたり1,000分の1から10,000分の1の間のどこかと推測する
出典: 編集部の直感(調査に基づかない)
実際のリスク
ペット1便あたり約16,000分の1(米国の航空会社、2024年)
DOTに報告する米国の航空会社によって輸送された動物、2024暦年
計算を表示
参照サブグループ:DOTのAir Travel Consumer Reportの動物事故システムを通じて報告された、単一の米国航空会社便に預けられた1頭のペット(犬、猫、またはその他の伴侶動物)。見出しの数字はDOTの通年2024年の数字を使用している。報告を行う米国キャリアが輸送した161,335頭の動物のうち10頭の動物が死亡し、1便あたりの死亡率はおおよそ16,000分の1となる。死亡のみの件数を区別している2つのDOT通年公表――2021年(輸送された256,114頭の動物のうち7頭の動物死亡)と2024年(161,335頭の輸送のうち10頭の死亡)――を合わせると、おおよそ417,000のペット便で17頭の死亡、すなわち約24,600分の1となる。2023年の公表は、輸送された124,593頭のうち9件の動物事故の合計のみを(10,000あたり0.72件の事故率として)公表し、個別の死亡件数は示していない。これらの近年を平均すると、1便あたりの死亡率は数万分の1(低〜中程度)に収まり、20,000分の1が年ごとの範囲内に収まる丸めた中心点推定値として使用されている。スコープはactivity_specific_lifetimeと宣言されている。これは特定の活動におけるペット1頭・1便あたりのリスクであり、一般集団の生涯リスクではなく、他の多くのLikelierページの米国成人生涯の数字と直接比較できないためである。事故報告は死亡、重傷、紛失を対象としている。20,000分の1の数字は死亡のみを数えており、負傷や紛失した動物は含まない。これらを含めると、ペット1便あたりの総事故率はほぼ倍増しておよそ12,000分の1になる。
注意事項: 1便あたりの死亡率は、年間一握りの事故で変動する小標本の統計であり、DOTのPart 235動物事故報告の提出を義務付けられている米国の航空会社のみを対象として…
1便あたりの死亡率は、年間一握りの事故で変動する小標本の統計であり、DOTのPart 235動物事故報告の提出を義務付けられている米国の航空会社のみを対象としている。外国のキャリア、貨物専用航空会社、地上輸送のペット配送、または暑さによる輸送停止や健康上の理由でチェックイン時に断られた輸送(高リスクの動物が飛行する前に分母から取り除かれる)は含まれていない。このデータセットはまた、「飛行中に死亡」と「飛行関連の状態により到着後に安楽死」と「輸送中にたまたま表面化した既存の状態で死亡」を区別しておらず、これらは単一の報告カテゴリーとして扱われている。最後に、見出しの率は過去10年間で低下傾向にある。複数の米国の航空会社が多くの短頭種を貨物として受け入れるのをやめ、歴史的な死亡例の大半をシステムから機械的に取り除いたためである。残存する全品種の率は、航空会社がかつて輸送していたものではなく、今なお輸送しているもののリスクプロファイルを表している。この数字を2018年以前の報告と比較する読者は、古い数字が実質的に高くなることを予期すべきである。
リスクはどう変わるか
見出しの数値は大きく異なる状況の平均です。シナリオや文脈による確率の違いは以下の通りです:
16,129分の1
10 deaths / 161,335 animals transported = 1 in 16,134 per pet-flight. Deaths only; excludes injuries and lost animals.
13,889分の1
DOT reported 9 combined animal incidents (deaths, injuries, and losses) / 124,593 animals transported = a 0.72-per-10,000 incident rate, or about 1 in 13,800 per pet-flight. The 2023 release did not break out a separate death-only count, so this is the combined-incident rate, not the death-only rate.
37,037分の1
7 deaths / ~256,000 animals transported = 1 in ~36,600 per pet-flight. 2021 had unusually high volumes relative to deaths.
2,000分の1
AVMA/DOT 2005-2010 data: about half of 122 dog deaths were short-faced breeds at a small fraction of pet transport volume, implying a per-flight rate roughly an order of magnitude above the all-breed average — ~1 in 2,000 per flight is the working estimate. Several US airlines banned these breeds from cargo as a result.
200,000分の1
DOT incident reports are dominated by cargo hold events. Cabin carriage incidents are rare enough in the monthly filings to be roughly a tenth of the all-pet rate, putting the per-flight death rate for a cabin pet near 1 in 200,000. Small sample; treat as order-of-magnitude.
バーの長さと濃淡は、これらのシナリオを他のリスクとではなく、互いに比較して順位付けしたものです。正確な確率は各項目の横に表示されています。
関連するリスク
似たテーマの他のリスク — 関連する不安を探るために。
比較対象を選択
The headline number is roughly 1 in 20,000 per pet-flight on US airlines, averaged across recent years of DOT Air Travel Consumer Report filings. In 2024, reporting carriers logged 10 animal deaths across 161,335 animals transported — about 1 in 16,000. In 2021, seven deaths across roughly 256,000 — about 1 in 36,600. (For 2023, DOT published only a combined total of nine animal incidents across 124,593 transported, without a separate death count.) The per-flight fatality rate is in the same order-of-magnitude ballpark as the lifetime odds a US adult dies in a plane crash, and comfortably lower than most owners guess when asked cold. For a healthy, non-brachycephalic pet on a direct domestic flight in moderate weather, air cargo transport is, statistically, closer to a routine procedure than to a dangerous one.
What makes this fear unusual on Likelier is that the headline rate is not the interesting number. The distribution is extraordinarily skewed by breed. Over a five-year DOT review window summarised by the AVMA, roughly half of all 122 recorded dog deaths on airline flights were brachycephalic breeds — pugs, English bulldogs, Boston terriers, boxers, Pekingese — despite those breeds making up a much smaller share of transported pets. English bulldogs alone accounted for 25 of 122 deaths, and pugs for 11. Short-faced dogs and cats have narrow nostrils and elongated soft palates that compromise breathing under the heat, noise, and stress of a cargo hold; several US airlines, including Delta, United, and American, subsequently stopped accepting many of these breeds as checked cargo on the basis of the same data. Most of the “airlines kill pets” headline events of the last fifteen years involved a brachycephalic animal. The all-breed average hides that.
Where the headline number does not apply: it does not describe a brachycephalic dog (probably closer to 1 in 2,000 per flight historically, which is why they are now largely banned from cargo), a senior pet with cardiac or respiratory disease (roughly 3x the average), or a pet exposed to summer heat or winter cold on the tarmac between connecting flights. It also does not describe a small dog or cat riding in the cabin under the seat, where DOT-reportable incidents are rare enough to imply a per-flight fatality rate around an order of magnitude below the all-pet figure. Bulfon et al.’s 2023 peer-reviewed owner-survey study of 635 air-traveled dogs found that most recovered quickly from flying, with only about 0.6 percent still showing elevated stress 30 days out, but the two deaths in the sample were both in the cargo hold. The risk-reduction levers — cabin over cargo, direct over connecting, cool weather over summer, a healthy non-flat-faced adult over an elderly bulldog — are almost entirely within the owner’s control, which is rare for a fear whose baseline rate is already small.
関連する豆知識
ペットが航空貨物輸送中に死亡する確率はおよそ~1 in 16,000 per pet-flightです(米国の航空会社、2024年)。心配する飼い主は1便あたり1 in 1,000から1 in 10,000の間と推測しがちです。
根拠台帳
以下の各数値は各出典が報告した内容であり、引用した原文の抜粋と算出方法を記載しています。リンクをクリックして直接確認できます。
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[1] US Department of Transportation, Office of Aviation Consumer Protection — Air Travel Consumer Report: December 2024, Full Year 2024 Numbers
Air Travel Consumer Report: December 2024, Full Year 2024 Numbers- 統計値
10 animal deaths, 3 injuries, 0 lost, across 161,335 animals transported by US airlines in calendar year 2024 (rate of 0.81 incidents per 10,000 animals)- 抜粋
“"For calendar year 2024, carriers reported 10 animal deaths, injuries to three other animals, and zero lost animals, for a total of 13 incidents, up from nine incident reports filed in calendar year 2023. For calendar year 2024, 161,335 animals were transported by airlines, for a rate of 0.81 incidents per 10,000 animals transported." ”
- 出典データ
- 2025-03-01
- アクセス日
- 2026-04-11 · アーカイブ版
- 計算過程
- Airlines that transport animals in the US are required by 14 CFR Part 235 to report every death, injury, or loss of an animal during air transport to the DOT. The monthly ATCR animal table publishes only a per-carrier count of deaths, injuries, and losses for a single month (the December 2024 report's animal section covers October 2024 and lists no full-year total or transported denominator). The full-year totals used here — 10 deaths, 3 injuries, 0 losses, and 161,335 animals transported for a rate of 0.81 incidents per 10,000 — are the DOT/OACP annual summary published on the "Full Year 2024 Numbers" newsroom release for the December 2024 ATCR, which is the source cited and quoted above. Dividing the 10 reported deaths by the 161,335 animals transported in 2024 gives a per-flight death rate of 1 / 16,134 ≈ 0.0000620, or roughly 6 per 100,000 pet-flights. Including injuries and lost animals as "incidents" raises the combined figure to 13 / 161,335 = 1 in 12,410 per pet-flight. The DOT's headline "0.81 incidents per 10,000" phrasing matches this 1-in-12,000 combined-incident rate, not the death-only rate. Averaging the two DOT full-year releases that break out a death-only count — 2021 (7 deaths / 256,114 transported) and 2024 (10 / 161,335) — gives 17 deaths across roughly 417,000 pet-flights, or about 1 in 24,600; the 2023 release reported only nine combined animal incidents across 124,593 transported and did not publish a separate 2023 death count, so it is excluded from the death-rate average. The 1 in 20,000 headline is a round central point inside this year-to-year range.
- 独立性
- DOT is the upstream source for US airline pet incident data; essentially every other secondary report (AVMA, Time, PetFlight, AWI) depends on the same Part 235 filings, so these are not independent measurements, just different presentations of the same regulatory dataset.
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[2] American Veterinary Medical Association — Air travel and short-nosed dogs FAQ
Air travel and short-nosed dogs FAQ- 統計値
Approximately half of 122 dog deaths associated with airline flights over a 5-year period involved short-faced brachycephalic breeds; 25 were English bulldogs and 11 were pugs- 抜粋
“"Over the last 5 years, approximately one-half of the 122 dog deaths associated with airline flights involved these short-faced breeds." ... "25 of the 122 dogs that died over the 5-year period were English bulldogs, followed by 11 pugs." ... "Short-nosed breeds of dogs—such as pugs, Boston Terriers, boxers, some mastiffs, Pekingese, Lhasa Apsos, Shih tzus and bulldogs—are more likely to die on airplanes." ”
- 出典データ
- 2011-06-01
- アクセス日
- 2026-04-11 · アーカイブ版
- 計算過程
- AVMA summarised a DOT-data review showing that brachycephalic (short-snouted) breeds accounted for roughly half of all dog deaths on US airline flights in 2005-2010, despite being a much smaller fraction of the total pet population transported. This is the main evidence for the ~10x breed multiplier used in the personal factor table: if English bulldogs alone contributed 25/122 ≈ 20 percent of all dog deaths at a far lower share of total transported pets, their per-flight death rate is roughly an order of magnitude above the all-breed average. Several US airlines (Delta, United, American) subsequently banned many brachycephalic breeds as checked cargo based partly on this data.
- 独立性
- AVMA's summary is built on the same underlying DOT Part 235 animal incident reports as the first source, so the two citations share an upstream dataset. They are used here as complementary rather than independent: the DOT report is the authoritative headline rate, and AVMA provides the breed-level breakdown that the raw DOT tables do not publish in a digested form.
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[3] Animals (MDPI) / US National Library of Medicine PMC — How Well Do Dogs Cope with Air Travel? An Owner-Reported Survey Study
How Well Do Dogs Cope with Air Travel? An Owner-Reported Survey Study- 統計値
In a 635-dog owner-reported survey, 2 dogs died during the study period, both traveling in cargo holds; 9.4 percent of dogs were much more or extremely more stressed 48 hours post-flight, declining to 0.6 percent at 30 days- 抜粋
“"Most dogs cope with and recover well from air travel but that there is a group of individuals who suffer physical, mental, and emotional ill health consequences during or after air travel, including death." ... "Only 8.3% of dogs in this survey were brachycephalic breed dogs." ”
- 出典データ
- 2023-09-22
- アクセス日
- 2026-04-11 · アーカイブ版
- 計算過程
- The Bulfon et al. owner-reported survey is the most recent peer-reviewed study of how companion dogs tolerate air travel. Used here as a qualitative cross-check on two points: (a) the headline rate of fatal or serious adverse events is small but nonzero even in a self-selected sample of travel-willing owners, and (b) the distribution of stress responses is highly skewed — most dogs recover quickly, a small minority suffer substantial post-flight effects, and fatalities concentrate in cargo hold placement. The study is not powered to compute a per-flight mortality rate directly (n=635 dogs, 2 deaths is not a stable denominator), but it corroborates the DOT pattern that deaths, when they occur, are overwhelmingly in cargo hold rather than cabin travel.
- 独立性
- Bulfon et al. collected an independent owner-reported sample rather than DOT Part 235 filings, so this source is methodologically independent of the first two. It measures a partially overlapping population (pet dogs on commercial flights, mostly European and Australasian carriers) but uses a separate data-collection pipeline.





