They featured enlarged " achilles tendons " inspired by those of a kangaroo , a pronounced toe but no heel ( like the leg of a dog ) , and tripodal ostrich - like feet , the combination of which made you stand a foot and - a - half taller 他们受到了袋鼠腿部肌腱的启发，将一个有脚趾但没有脚后跟的腿（类似于狗的腿）加上一种和鸵鸟一样三个脚趾的脚，这样的组合就可以使你站起来比以前高出1 . 5英尺。
