A reward of £10,000 has been offered for the return of two-month-old donkey foal Moon which was stolen from Miller's Ark activity farm near Hook.
And a GoFundMe page started by Jules Hamilton to provide a security system for Miller's Ark has so far raised £5,540.
Jules, who has donkeys called Chaos and Shambles, said: "It came as a nasty shock to hear that little Moon was stolen in broad daylight from Miller's Ark. Her mother is very distressed as at two months old little Moon is far from weaned, so she needs her mum.
"We hope that the social and mainstream media, together with the powerhouse that is our shared animal-loving determination, will get her home."
Miller's Ark provides animal therapy and interactive experiences to help people with a variety of difficulties. The charity also provides for at-risk species and ensures they develop and thrive in a safe and nurturing space.
Moon was taken from her mother Astra on May 15, and a member of the public said they saw a donkey in the back of a car in Farnham that afternoon.
Hampshire Constabulary said it had received “multiple calls from members of the public with possible sightings of the donkey” and conformed the theft of Moon remained under investigation, adding: “All lines of enquiry are being followed up.”
Anyone with information should call Hampshire Constabulary on 101 quoting 44230191581.