Good luck to you. I don't know what I'd do, as I find bats absolutely revolting. The concept of a flying rodent is repulsive to me, which is strange because mice and rats don't really bother me.
* edit * It appears that bats are not actually classified as rodents, but as chiroptera. I guess you learn something new everyday.
Other creatures that are
rodents: squirrels, prairie dogs, and beavers.
Also, I had never heard of these, but the capybara is the largest living rodent in the world, and they can weigh up to 140 lbs.