Lab experiments have shown that the echidna is more intelligent that a cat and it has been seen using its spikes, feet and beaks to climb up crevices like a mountaineer edging up a rock chimney.

• 实验室的实验表明，针鼹鼠笔猫更聪明，有人看到针鼹鼠利用其尖刺、脚和嘴喙向裂缝上爬，就像登山运动员利用悬崖表面缺口登山一样。