The hippopotamus’ strong jaws can crush a watermelon in one bite. At Japan’s Nagasaki Biopark, “Hippo’s Watermelon Time” happens twice a day. The keeper says “agemasu,” meaning “to give,” places the watermelon in the animal’s open mouth, and then crunch.
“Watermelon may be naturally cracked sometimes. But there is no cut made by our staff to break easily. You are welcome to visit Biopark to confirm if you doubt.”
Also at Nagasaki Biopark: “Enjoy scratching with many capybaras” while they sleep.