adj.像狗的；忠實(shí)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. 最近出土的化石使鯨的祖先可追溯到一種有蹄外形像狗的植食動(dòng)物，而且基因分析證實(shí)了現(xiàn)存動(dòng)物中河馬是鯨的近親。
