Curious Kids: where did rats first come from?

Black rats are originally from India and brown rats are originally from China.

Here's How Researchers Trained Lab Rats To Drive Tiny Cars

Giant African Pouched Rats Can Open and Close Genitals Throughout Their Adult Life

New York's Rats Have Already Won - The Atlantic

New York's Rats Have Already Won - The Atlantic

Top 5 Rat Movies I Made Up - by John Paul Brammer

Are Gophers Farmers? It's a Question You Didn't Know Needed Answering. - The New York Times

Rats reward each other's generosity – A new biology thing for curious kids – 2 New Things

Nerdfighteria Wiki - The Curious History of the Lab Rat

Curious Kids: where did rats first come from?

Rodents, Insects, and Reptiles That Make the Best Pets

What pet rats love to do - Rat care