A farmer discovered 50 dead lambs while checking on their livestock over the weekend.
The Irish Farmers Association is calling for stronger regulation on dog ownership.
It's after an Offaly farmer lost 50 sheep in a dog attack at the weekend.
John Healy fears the dogs will kill again.
Gardaí are investigating the incident, which took place in the early hours of Saturday morning in Moneygall.
20 sheep were also killed in an attack in Kildare, while there has been reports of other incidents in Tullamore and Borris on Ossory.
The Moneygall man says his two sons witnessed the aftermath of the massacre:
Read more: *GRAPHIC CONTENT* 'It Was A Slaughterhouse'
Midlands Gardaí Appeal For Witnesses To Fatal Crash
Midlands Security & Defence Analyst Says Hoax Bomb Threats Aimed To Intimidate
Almost €446,000 Allocated To Midlands Community Centres And Clubhouses
Midlands Family Takes On Ireland’s Fittest Family Challenge
5K Fundraiser To Support Motor Neurone Disease Association Takes Place In Westmeath
No Slowing Down With Age As Westmeath Bowlers Shine At 14th Annual National Bowls Competition
Woman Appears In Court Over €280k Cannabis Seizure In Midlands