Just watched this and found out (Warning contains really gross stuff)
two things I didn't know about rats and Asia.
In Cambodia they trap rats in the rural area and sell them to a guy who sells them to one or more Vietnamese restaurants that cook them as traditional food. The woman cook said "rats taste like a sweet version of chicken." At some Buddhist temple (I can't remember the country) they let the rats scurry upon their food and eat with them because they are reincarnated family members. A guy even drank milk with rats being all around it.
Meanwhile in New Orleans, LA USA scientists for the CDC are catching live rats and giving and quickly kill them for study by taking many different parasites out of them that can cause major diseases for humans and catalog them.