mice

Home » mice

What are Mammals – Biology

By |2018-04-21T11:56:43+00:00May 26th, 2017|Biology|

Rat from New Zealand About 200 million years ago, when all the land on Earth was stuck together in one big continent called Pangaea, some animals related to reptiles living on Pangaea gradually evolved into a new group called mammals (MAMM-elz). The mammals were different from the earlier reptiles in several ways. First, [...]