The makers of a chart-topping song only audible to dogs say they hope it can become a global hit.
The CD topped the New Zealand charts at Christmas
A Very Silent Night - a Christmas number one in New Zealand - raised money for the country's Society for the Prevention of Cruelty to Animals.
A spokesman admitted he did not know how the CD - recorded at a frequency inaudible to humans - sounded to dogs.
The track, which raised NZ$22,000 (£8,900), could now be released in the US and Australia, the spokesman added.
He said the reaction from listeners had been varied.
"The most violent one was a dog that physically attacked the radio when it was played and went quite berserk and totally destroyed it.
"On the other side of the scale, they just lay down and did nothing," he added.