Far from behaving similarly, herds cloned from the same individual develop the usual social hierarchy, with some cows being more skittish and others more bold.

• 这些从同一头牛所复制出来的牛群，发展出一般常见的社会阶级，而且性情大不相同，有些母牛比较小心谨慎，有些则比较大胆。