A metaphorical stink was kicked up when a bloke called Mahmoud A. Sarhan visited the International Garden in Cairo at the weekend.
Officials at an Egyptian zoo are denying allegations that two zebras on display are in fact donkeys painted with black and white stripes.
Mr Sarhan said the enclosure was home to two animals, both which he says were painted.
The image, showing the animal with smudges on its face, attracted attention online before experts gave their view on its species.
A zoo in Egypt is facing some questions after a photo emerged of a less-than-stellar looking zebra.
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However, a veterinarian told news outlet Extranews that he concurred with the disgruntled student, pointing out that real zebras have black snouts, not striped ones.
But despite overwhelming evidence, Mohamed Sultan, the director of International Gardens Park, has denied it is an imposter.
At first look, the animal appears to be a zebra.
This is not the first attempt by a zoo to market dubious specimens to unsuspecting visitors.
In 2013, a Chinese zoo in Henan province tried to pass off a Tibetan mastiff dog as an African lion, and in 2017 a zoo in Guangxi province disappointed visitors by exhibiting blow-up plastic penguins.