🌐EnglishEnglishDeutschEspañolFrançaisItalianoPolskiPortuguêsSvenskaTiếng ViệtTürkçeРусскийالعربيةفارسی한국어中文日本語EntityQ1059666· pop 31· linked from 69 articlesAllen's rulebiological rule that warm-blooded animals from colder climates usually have shorter limbsConnectionssurface-area-to-volume ratioEntitybiological ruleEntityCategoriesEcogeographic rulesPhysiology