The ISPCA in Clare intend to create a sanctuary on the outskirts of Ennis for the elusive Vietnamese pot-bellied pig.
The pig, thought to have been a pet, is understood to have been living wild for over a year and is reported to have attacked farmers and livestock in the area.
Clare's ISPCA dog warden, Mr Frankie Coote, said: "Because he is finding it very easy to get food at the moment, he is no threat to anyone.
"This will change in the winter as the food supply dries up and he may start to move around and attack livestock and people again."
Mr Coote said that to avoid any further attacks, the ISPCA is proposing to set up the sanctuary in a craggy area where the pig is now feeding and continue to supply it with food during the winter.
He said: "A local vegetable shop has already told us that we can have as much food as we want to feed the pig on these lands which will be done, of course, with the permission of the local farmers."
Mr Coote said that the area the pig is currently feeding in is "like a jungle" and that there is plenty of evidence of the pig in the area. He added that it will prove very difficult to catch the pig alive.
He said: "I believe at this stage that he weighs about 20 stone" and people who have seen him say he is cautious and cagey and quickly disappears at the slightest sound.
Supt John Kerin of Ennis Garda station said gardaí will investigate if anyone shoots the pig. He said the public should be mindful that individuals could face charges if they are seen to contravene the Wildlife Act or the terms of their firearm certificates.
Supt Kerin said: "We have had a number of calls from the ISPCA stating that they will make a formal complaint to the gardaí if the pig is shot."
Under the Wildlife Act, a person must be in immediate danger before an attempt is made to shoot. He said: "If anyone is intending to shoot the pig, they must think very, very carefully on what they are going to do."
