英语中共有多少种动物?答:polar bear: cubpolecat: kitporcupine: pupporpoise: calfpossum: joeyquail: cheeper, chick, squealerrabbit: bunny, kit, kitten, nestling, leveretraccoon: cub, kitraven: chickreindeer: fawn, calfrhinoceros: calfrook: chickrooster: cockerelsalmon: alevin, fry, parr, samlet, skegger, smoltsandpiper...