Mario Eijs, who is mentally disabled, had developed a brain tumour and had difficulty walking or speaking. He wanted to pay a final visit to the co-workers and animals he loved.
The Stichting Ambulance Wens offers free transport to terminally ill patients.
Several giraffes became curious when Eijs was brought to their inside enclosure on March 19.
Exoo said it was "a last greeting to each other that gave everybody watching goose bumps."
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