Dogs pull harder on the leash when they wear a harness than a collar
人们有时声称狗背带可以减少牵引绳上的拉力，但一项实验发现，它们的效果恰恰相反
The Seventeenth-Century Space Race (for the Soul)
Amelia Soth，JSTOR Daily 一群天鹅被绑在木制挽具上，下面悬挂着一只面带微笑的、长着花边褶边的天鹅：
