The African clawed frog X. laevis (above) and the western clawed frog X. tropicalis (bottom two frogs)
Date:
19 October 2016
Credit:
Professor Atsushi Suzuki, Hiroshima University
Copyright OIST (Okinawa Institute of Science and Technology Graduate University, 沖縄科学技術大学院大学). Creative Commons Attribution 4.0 International License (CC BY 4.0).