This image was rejected for "Intellectual Property Refusal", can someone tell me why this would be considered someone else's intellectual property? Thanks so much.

The photo of this lady lion can be identified because of a particular pattern in the ears. So, who owns the animal or display area where she was photographed? Permission might be required even if she is in a zoo. Do a bit of research on this beauty then conform to Adobe rules if you can - get the release - or take down the submission. Nice shot. JH