It's a frisky business. 其实是闹着玩的

168. so can grazers.
     食草动物也能活下来
169. Wild ass.
     藏野驴
170. The males are fighting to win territories. Those that hold the best are more likely to attract a herd of females.
     雄驴在争夺领地 最有实力的也最有可能得到雌驴的青睐
171. It's a frisky business.
     其实是闹着玩的
172. That counts as a victory,
     那样算是胜了
173. but he can't assume the females will actually turn up.
     但却没有看到雌驴的出现
174. Female asses are mysterious creatures.
     雌野驴是一种神秘的动物

来自《行星地球 第一季 第七集 Planet Earth S01E07 伟大草原》第 171 行