Sheep killed by a dog on a farm outside Longford town last year.
The ISPCA are reminding pet owners that they are liable for injury or damage caused by their dog to people or to livestock.
ISPCA Chief Inspector Conor Dowling said: “Pet owners must to be responsible and ensure the welfare of the dogs, sheep and vulnerable lambs are protected at all times.
“A dog’s natural instinct can be to chase, and even the most docile, well-behaved dog may take part in pack behaviour. Pregnant ewes can be injured in a panic to escape from chasing dogs, often miscarrying their lambs. Or worse, they are fatally injured causing serious suffering and damage and devastation to farmers.
Under the Control of Dogs Act 1986, as amended by the Control of Dogs Act 1992, it is an offence not to have your dog under effectual control and local authorities are responsible for enforcing the control of dog’s acts.”