adj.像狗的；忠实的
Recently unearthed fossils trace whales to a doglike predecessor of hoofed plant-eaters, and genetic analysis has identified hippos as whales' closest living relatives. 最近出土的化石使鲸的祖先可追溯到一种有蹄外形像狗的植食动物，而且基因分析证实了现存动物中河马是鲸的近亲。
