It also has little cutouts on the sides where you place the straps in, before placing baby in, so you're not digging under him to find them (genius!). (whattoexpect.com)
Although wolves dig under it, and roe deer are believed to leap over it, the herd of the largest of Europe's mammals remains divided, and thus its gene pool. (discovermagazine.com)
Some are clever escape artists capable of jumping over fences or digging under them to make their way out. (puppy-training-solutions.com)