所有海豚，包括宽吻海豚，是都属于鼠海豚科。
虽然有些人把这些名称交替使用，鼠海豚科实际上是一个更大的群体，其中还包括像虎鲸和白鲸等动物。
Although some people use these names interchangeably, porpoises are actually a larger group that also includes animals like the orca and the beluga whale.
系统重建分析支持海豚科和鼠豚科为单系发生，且两者构成姐妹群关系；
The phylogenetic reconstruction supported Delphinidae and Phocoenidae respective monophyletic groups, and proposed a sister relationship between these two families.
系统重建分析支持海豚科和鼠豚科为单系发生，且两者构成姐妹群关系；
The phylogenetic reconstruction supported Delphinidae and Phocoenidae respective monophyletic groups, and proposed a sister relationship between these two families.
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