5 unique mammals that lay eggs instead of giving live birth
When we think of mammals, we usually think of animals that give birth to live babies, like lions or humans. But there’s a ...
Natural History Museum%2c London9 个月
Ten reasons to love echidnas
Discover more about these spiky, gentle beings. 1. Echidnas are monotremes - mammals that lay eggs. They are one of two mammals in the world to do so. It takes about 22 days after mating for the ...