The change in policy would also minimise the impact on the council's dog control officer.
"The trauma to him was significant, he hated doing that part of his job. He accepted it as part of his job and did it professionally and kindly, but he's happy he no longer has to do it himself."
Mr Bunny said the council had negotiated a discount with a local vet for the euthanasia and disposal of unwanted and dangerous dogs, which number about 10 per year in the district and would cost the council about $1000.
Masterton District Council spokesman Sam Rossiter-Stead said that, in line with animal welfare laws, the council had a strong preference for dogs to be euthanised by a vet but a firearm could still be used where the welfare of animals or staff was at risk.
More than 109 dogs were put down by Masterton District Council in the past financial year, 89 by firearm.
Carterton District Council's policy for more than 40 years has been to euthanise by firearm or by vet, depending on the circumstances, and 14 dogs were euthanised in the past financial year.
Chief executive Colin Wright said the council did not have any plans to review the policy as it had not been identified as an issue in Carterton.