how can animals like foxes sleep fully curled up and have healthy spines. But humans need to sleep with good posture to avoid spine problems?

Question

how can animals like foxes sleep fully curled up and have healthy spines. But humans need to sleep with good posture to avoid spine problems?

In: 3

Answer 1

They have very flexible spines. But also they only live about five years in the wild and ten-fifteen in captivity, so their spines don’t have to last nearly as long as ours.