Question: Why dos some animals eat meat and some eat plants?

Pizza Ka Yee Chow answered on 22 Nov 2019:

We are evolved with different digestive system and so some animals would be able to digest plants whereas others would be able to digest meat. However, it is not always all-or-none because lots of animals could eat a bit of both. For example, squirrels mostly eat plants but they also eat meat (for protein).