Unverified85% confidenceDecision RuleTime unknown
金属锁扣（登山扣式/D扣）承重通常＞50kg且不易被撕咬破坏，塑料卡扣虽轻便但反复开合超过2000次后易疲劳断裂，大型犬和易激动犬应选金属锁扣
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85%
Confidence
Long-term
Relevance
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Unverified锁扣式（登山扣/D扣）连接强度远高于塑料插扣，20kg以上犬种应选金属锁扣，塑料插扣长期使用易老化脆裂在暴冲时崩开92% similarUnverified金属插扣（如不锈钢/锌合金D扣）承重普遍在50kg以上，大型犬和牵引拉扯场景应选金属扣，塑料快拆扣多在15-25kg承重区间，适合小型犬日常佩戴91% similarUnverified扣环优选金属插扣或不锈钢D环，塑料快拆扣在大型犬爆发力拉扯下（>20kg）易断裂脱开88% similarUnverified牵引外出优先选金属D扣+金属插扣（如不锈钢/锌合金），塑料快拆扣在30kg以上犬只暴力冲刺时有断裂风险，仅适合悬挂铭牌的日常佩戴88% similarUnverified快拆塑料扣件便捷但强度低于金属插扣，大型犬急拉时塑料扣可能崩开；30kg以上犬只建议选金属承力扣或套头式（无胸口扣）结构88% similar
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