The Hawaiian Humane Society is investigating the case.
It is asking anyone who may have taken the license plate of an older model grey Toyota truck with hunting cage in the valley Saturday morning to call the information into their hotline at 356-2250.
On Tuesday, the Honolulu City Council will address the issue of loose hunting dogs.
Councilmember Ann Kobayashi has introduced a resolution calling for stricter enforcement of regulations on pig hunters.
The measure askes the Department of Land and Natural Resources for improved enforcement in light of the recent attacks on livestock and domestic pets.
"It could have been a lot worse. and we dont want it to be. That is frightening that it happened near a park where children could have been hurt and a real disaster could have occured," said Kobayashi.