Querida @krustelkram son hermosos sapos europeos!!!
— Escuela de Animales (@escuelaanimales) April 5, 2016
These are European toads!
Today as I went to feed the boars, I walked into a frog orgy. There were at least 40 of them. I recorded their sounds (you can listen to them below, frogs start 00:18). They sound really sweet. In the background, you hear Gustav digging and asking for some extra peanuts.