Katana,
Sorry, but you are full of $hit. Hiss? BS. Their teeth will rip your hand off. My old girlfriend’s cousin lost a smaller dog to a Possum. Tore him to shreds.
Kiwis hunt these VERMIN because they are not indigenous to NZ. Apart from their destruction of our native plants and animals, possums are also a major pest on farmland.
Go back to PETA or bone up on your knowledge.
They're beneficial since they consume ticks in large quantity. Tick borne illnesses such as Lyme Disease are a real problem for pets and humans here.
Good on you for taking out your version, especially in NZ where they must be an invasive terror to the native birds.