How did the brush tailed possum effect the ecosystems current food web?

Hairbrushed possums are Australian fauna. They mostly habitat domestic gardens and eat everything including flowers, vegetables, fruits, leaves, insects, native species and even plants which are poisonous for other animals.

They have the tendency to invade wherever they want, eat whatever they like affecting the food chains. They mark their territory wherever they go and eat chicken and eggs in homes. This behavior has affected other organisms in the food web because they either eat them or leave nothing for them.