Daphne the deer, who lived at Water's Edge Country Park, Barton, was put down following being attacked by a dog.
She was left with such terrible injuries that she could not be saved.
A North Lincolnshire Council spokesperson, said: "If any member of the public has any information on this incident, please contact our environment team.
"We hope we can get a successful prosecution for this attack on Daphne."
If any member of the public has any information on this incident, please contact us at: firstname.lastname@example.org. There will be a £200 reward available for information that leads to a successful prosecution. You can also ring on 01724 297000.
(Scunthorpe Telegraph - Jan 19, 2017)