In this May 12, 2017 photo, Guille, the hippopotamus, wades in a pool of water in her enclosure at the former city zoo now known as Eco Parque, in Buenos Aires, Argentina. Developers last July promised to relocate most of the zoo's animals to sanctuaries in Argentina and abroad, but they had made no firm arrangements to do so. (Photo by Natacha Pisarenko/AP Photo)
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