This image provided by the The Saint Louis Zoo shows a red wolf pup during a June 2024 health checkup at the Saint Louis Zoo Sears Lehmann, Jr. Wildlife Reserve. (Sara Burran/The Saint Louis Zoo via AP)

This image provided by the Saint Louis Zoo shows a red wolf pup during a June 2024 health checkup at the Saint Louis Zoo Sears Lehmann, Jr. Wildlife Reserve. (Sara Burran/Saint Louis Zoo via AP)

This image provided by the Saint Louis Zoo shows a red wolf pup during a June 2024 health checkup at the Saint Louis Zoo Sears Lehmann, Jr. Wildlife Reserve. ( Joshua Sydney Smith/Saint Louis Zoo via AP