The team at Jimmy's Farm say they are "disappointed and heartbroken" after tools worth thousands were stolen from the park in their fifth major attack in seven years.
The Wherstead attraction shared news yesterday that they had been hit by a "devastating" burglary on the night of Monday, June 12.
Alongside the theft of tools, their contractor's vehicles were damaged, fences broken down and fuel siphoned off from diggers.
Marketing manager Lauren Andrews said the staff were "disappointed and heartbroken" to discover the vandalism on the site of the park's new 24-acre expansion.
"We think it happened quite late on Monday night as our estates team discovered it early the next morning," she said.
"This is the fifth time this has happened in seven years, which is very upsetting."
The farm has previously been the victim of ram-raiders and Miss Andrews believes the thieves put similar planning into this incident.
"They had universal keys for the contractor's vehicles and brought cartons for the diesel, so they clearly knew what they were doing," she added.
READ MORE: Jimmy's Farm announces arrival of four capybara pups
"The damage comes out to just shy of £3,000 and I hope they know that they're taking food out of the animal's mouths.
"Somebody out there must know something."
The thieves targetted Jimmy's Farm's new build, which is due to open in September adding 24 acres onto the park, introducing Arctic Wolves and a few other different species.
"This attack will hinder our valuable conservation work in welcoming the animals that need our help," added Miss Andrews.
"Suffolk police have been amazing in helping us but it will take a while to recoup our losses."
Jimmy's Farm and Wildlife Park is appealing to anyone with information on the burglary and vandalism to contact their team on enquiries@jimmysfarm.com or call Suffolk police.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here