They stay alive for only six to ten hours after ejaculation, so a stud ram from Wales cannot easily inseminate a Scottish ewe without going to meet her.

• 射精后，公羊的精子只能存活6至10个小时；所以，威尔士的种羊无法轻易地令远在苏格兰的母羊受精，除非与对方“亲密接触”。