Cats | Breeds and Lifespan | Evidence chain

FAQ

What should I note about the scientific name of the cat?

*Felis catus* (domestic cat). The actual judgement still rests with a veterinarian on a case-by-case basis, and this article gives no drug names or dosages.

猫の学名について何に注意すべきですか？ — *Felis catus*（イエネコ domestic cat）。実際の判断は獣医師が個別の症例に応じて行う必要があり、本記事は薬剤名と用量を記載しません。

What should I note about the scientific name of the cat? — *Felis catus* (domestic cat). The actual judgement still rests with a veterinarian on a case-by-case basis, and this article gives no drug names or dosages.

What should I note about the lifespan range of the cat?

Lifespan: ① life expectancy at birth = 11.18 years (US Banfield clinic data, Montoya et al., PMC9989186, "life expectancy at birth...11.18 years (11.16–11.20) for cats" <https://pmc.ncbi.nlm.nih.gov/articles/PMC9989186/>, verified 2026-07-30) ② median age-at-death = 14.0 years (UK 2009–2012 study, cited in the same paper, "median age-at-death of cats between 2009 and 2012 in a UK study was 14.0 years", verified 2026-07-30). ⚠️ The two estimators must not be combined: their denominators and sampling are entirely different. State which one you are citing. (OP construct correction 2026-07-30: a CX audit caught the statistical constructs as mismatched; the two studies use different methodologies — the former is a life-expectancy-at-birth statistic, the latter a median age at death, and the numbers are not interchangeable). The actual judgement still rests with a veterinarian on a case-by-case basis, and this article gives no drug names or dosages.

猫の寿命の範囲について何に注意すべきですか？ — 寿命：① 出生時平均余命（life expectancy at birth）＝ 11.18 年（米国 Banfield 診療データ、Montoya et al.、PMC9989186、「life expectancy at birth...11.18 years (11.16–11.20) for cats」<https://pmc.ncbi.nlm.nih.gov/articles/PMC9989186/>、確認 2026-07-30）② 死亡時の中央値年齢（median age-at-death）＝ 14.0 年（英国 2009–2012 年の研究、同論文の引用、「median age-at-death of cats between 2009 and 2012 in a UK study was 14.0 years」、確認 2026-07-30）。⚠️ 2つの推定量は合算してはいけません：分母と標本抽出がまったく異なります。引用の際はどちらを用いたか明示してください。（OP による構成概念の修正 2026-07-30：CX 監査が統計的構成概念の不一致を指摘。2つの研究は方法論が異なり、前者は出生時平均余命の統計、後者は死亡時の中央値年齢であり、数値をそのまま置き換えることはできません）。実際の判断は獣医師が個別の症例に応じて行う必要があり、本記事は薬剤名と用量を記載しません。

What should I note about the lifespan range of the cat? — Lifespan: ① life expectancy at birth = 11.18 years (US Banfield clinic data, Montoya et al., PMC9989186, "life expectancy at birth...11.18 years (11.16–11.20) for cats" <https://pmc.ncbi.nlm.nih.gov/articles/PMC9989186/>, verified 2026-07-30) ② median age-at-death = 14.0 years (UK 2009–2012 study, cited in the same paper, "median age-at-death of cats between 2009 and 2012 in a UK study was 14.0 years", verified 2026-07-30). ⚠️ The two estimators must not be combined: their denominators and sampling are entirely different. State which one you are citing. (OP construct correction 2026-07-30: a CX audit caught the statistical constructs as mismatched; the two studies use different methodologies — the former is a life-expectancy-at-birth statistic, the latter a median age at death, and the numbers are not interchangeable). The actual judgement still rests with a veterinarian on a case-by-case basis, and this article gives no drug names or dosages.

What should I note about the life-stage classification of the cat?

Kitten / junior / adult / mature / senior; the age boundaries for each stage follow the 2021 AAHA/AAFP Feline Life Stage Guidelines (catvets.com: "Kitten: birth up to 1 year" "Young adult: 1 to 6 years" "Mature adult: 7 to 10 years" "Senior: 10 years and older" "End-of-life: any age", <https://catvets.com/resource/aaha-aafp-feline-life-stage-guidelines/>, verified 2026-07-30); ⚠️ the 2021 edition has been simplified to 4 age stages plus an end-of-life stage, which does not map exactly onto the older 5-stage naming used in this table; take the age cut-points from the newer edition. The actual judgement still rests with a veterinarian on a case-by-case basis, and this article gives no drug names or dosages.

猫のライフステージ区分について何に注意すべきですか？ — 子猫（kitten）／若齢（junior）／成猫（adult）／中高齢（mature）／高齢（senior）；各ステージの年齢境界は 2021 AAHA/AAFP Feline Life Stage Guidelines に準拠（catvets.com：「Kitten: birth up to 1 year」「Young adult: 1 to 6 years」「Mature adult: 7 to 10 years」「Senior: 10 years and older」「End-of-life: any age」、<https://catvets.com/resource/aaha-aafp-feline-life-stage-guidelines/>、確認 2026-07-30）；⚠️ 2021 年版は 4 つの年齢区分＋終末期に簡素化されており、本表が踏襲している旧来の 5 区分の呼称とは完全には対応しません。年齢の区切りは新版を基準としてください。実際の判断は獣医師が個別の症例に応じて行う必要があり、本記事は薬剤名と用量を記載しません。

What should I note about the life-stage classification of the cat? — Kitten / junior / adult / mature / senior; the age boundaries for each stage follow the 2021 AAHA/AAFP Feline Life Stage Guidelines (catvets.com: "Kitten: birth up to 1 year" "Young adult: 1 to 6 years" "Mature adult: 7 to 10 years" "Senior: 10 years and older" "End-of-life: any age", <https://catvets.com/resource/aaha-aafp-feline-life-stage-guidelines/>, verified 2026-07-30); ⚠️ the 2021 edition has been simplified to 4 age stages plus an end-of-life stage, which does not map exactly onto the older 5-stage naming used in this table; take the age cut-points from the newer edition. The actual judgement still rests with a veterinarian on a case-by-case basis, and this article gives no drug names or dosages.