This size difference is handy during the mating season, when males clasp females for a few days in a position called amplexus. The male is carried around by the female like a backpack―for the best and the worse. This breeding pair was dangerously crossing a busy biking track on the Fischland-Darss-Zingst Peninsula I recently visited. I stopped to take some photographs of their hazardous journey while making sure they safely reached the other side where the female would likely lay eggs among the tall reed grasses.
Location: Zingst, Germany