"Then partly wind windows down," Mrs Ball said.
She said pet owners should realise they can be prosecuted for leaving animals unattended in cars. If the animal became distressed the owners could be summoned for neglecting an animal.
Mrs Ball said another concern at this time of year is the number of fully laden truck-trailers being parked up and left on roadsides.
"We have been fielding calls from people reporting these instances to us. On Thursday I was called out to a trailer parked up near Henley Lake on Te Ore Ore Road that was fully laden with sheep and had been left in full sun for over an hour," Mrs Ball said.
Another was parked on the side of State Highway 2 near Juken NZ that had been left for more than an hour and a half, Mrs Ball said. In both cases the sheep had appeared distressed, she said.