Police were called to Linda Blair's animal shelter on Sunday (17Jan10) after a neighbour allegedly shot dead the actress' dog to stop it attacking a pet pig.
The Exorcist star's Labrador cross is said to have escaped from her WorldHeart Foundation rescue centre in Los Angeles, before running to a nearby ranch, where it reportedly mauled a miniature potbellied pig.
The ranch owners allege the dog clawed the pig in a "death grip" so they fired five shots into the air to scare it away.
When the dog failed to loosen its grip, Blair's neighbours claim they had no choice but to gun down the canine.
The dog died in the incident, but the pig, nicknamed Gerty, is expected to recover.
Authorities have decided not to file charges against the pig owners, reports TMZ.com.