Hippopotamus eats frozen watermelon to cool off July 26, 2018 by arshad A hippopotamus eats frozen watermelon to cool off at the “Bioparco” zoo during a heat wave on July 25, 2018 in Rome. / AFP PHOTO / TIZIANA FABI A hippopotamus eats frozen watermelon to cool off at the “Bioparco” zoo during a heat wave on July 25, 2018 in Rome. / AFP PHOTO / TIZIANA FABI A hippopotamus eats frozen watermelon to cool off at the “Bioparco” zoo during a heat wave on July 25, 2018 in Rome. / AFP PHOTO / TIZIANA FABI A hippopotamus eats frozen watermelon to cool off at the “Bioparco” zoo during a heat wave on July 25, 2018 in Rome. / AFP PHOTO / TIZIANA FABI A hippopotamus eats frozen watermelon to cool off at the “Bioparco” zoo during a heat wave on July 25, 2018 in Rome. TIZIANA FABI / AFP