"Their dogs had been missing for 24 hours. They sent a photo through and my brother just said 'Yep, it looks like them'.
"They were obviously devastated that their dogs did that and that they would have to lose them.
"It's tough for everyone. I do take my hat off to them because they did the right thing."
Seven other goats were injured in the attack and a vet was called to attend to them, Weber said.
They were expected to survive.
Whanganui District Council's compliance team leader for service delivery, Andre Claasen, said the dogs had been impounded and the animal management team was beginning an investigation.
Eighty lambs were killed and a further 120 injured at a Marangai farm in February after an overnight dog attack.
Three months later a small restrained dog and its female owner were attacked by an unrestrained black and white dog, described as a pitbull or bulldog, at Kowhai Park in Whanganui.
Both the dog and the owner received injuries, with the owner being treated in Wellington Hospital.
Under Section 57 of the Dog Control Act 1996, the owner or person in control of a dog that kills another animal may be convicted in court, destruction of the dog may be ordered and the dog owner may be disqualified from owning a dog.