The announcement said the recall was issued "out of an abundance of caution."
A statement posted online by the Centers for Disease Control and Prevention revealed two people had eaten some of the salad from the container before discovering the "animal matter" -- dead bat remains.
"Two people in Florida reported eating some of the salad before the bat was found. The bat was sent to the CDC rabies lab for laboratory testing because bats in the United States sometimes have been found to have this disease. The deteriorated condition of the bat did not allow for CDC to definitively rule out whether this bat had rabies," the statement said.
The statement said customers whose salads are among those in the recall don't face any risk unless animal parts were discovered in the container. The CDC said those customers don't need to contact health authorities.