Smart squirrels use a mortise-tenon structure to fix nuts on understory twigs
Published in 2022 by
Han Xu,
Lian Xia,
John R. Spence,
Mingxian Lin,
Chunyang Lu,
Yanpeng Li,
Jie Chen,
Tushou Luo,
Yide Li,
Suqin Fang 
