Photo: Joern Pollex/Getty Images
A young Asian elephant named Assam is measured by zoo staff on May 16 during inventory day at the Hagenbeck zoo in Hamburg, Germany. Home to about 1,850 animals across 210 species, the zoo conducts a headcount of residents every year.
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Photo: Joern Pollex/Getty Images
A young walrus opens its mouth wide as a staff member inspects its chompers.
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Photo: Joern Pollex/Getty Images
An adorable Ouessant lamb is weighed by zoo staff as spectators and photographers look on.
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My how you've grown! Zoo takes stock of baby animals
The Hagenbeck Zoo in Hamburg, Germany conducts an annual headcount of all of its residents.