KWWL-TV (http://bit.ly/Zb7sED) reports that officials at the National Mississippi River Museum & Aquarium in Dubuque believe the tortoise named Cashew was stolen, but that the thief quietly returned the animal.
The museum says a visitor found Cashew on the elevator floor Thursday. She appears to be in good health.
The museum discovered Cashew was missing Tuesday from an exhibit with a 4-foot glass wall. Museum officials suspected she was taken as a prank or to sell.
Museum officials are reviewing surveillance video to try to figure out exactly what happened and find a possible suspect.
Information from: KWWL-TV, http://www.kwwl.com