Unverified90% confidenceDecision RuleTime unknown

宠物床内径应比宠物蜷缩时身长长10-15cm，标注尺寸多为外径，需减去边缘围挡厚度（通常5-10cm）才是实际睡眠区

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Unverified床垫尺寸应比宠物侧卧完全伸展的长度大15-20cm，让四肢可伸直；用体长×1.25估算，过小的床迫使关节炎宠物蜷缩加重关节压力87% similar Unverified床垫尺寸应比宠物侧卧完全伸展时的长度长约25%，老年宠物睡眠时间长且需要充分伸展关节，过小的床垫会迫使其蜷缩加重关节僵硬86% similar Unverified床面展开长度需比身高多20cm才能睡得舒展，身高180cm者应选内长≥195cm的床，多数标称190cm的折叠床实际净睡区仅185cm83% similar

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