"He was still warm and bleeding," he said, sadly. "He had been shot by some vicious person with a pellet gun. It broke my heart."
The neighbours heard a shot at about 4.15am, he said.
"It must have been someone who lives near me to see him on the roof. The person might brag about what they have done. I hope they are overheard," he added.
"They're vicious people who do things like that. They have no love for life. I miss him so much."
Tauranga police Acting Senior Sergeant Cameron Anderson said police had questioned residents in the street but had not identified the person responsible.