Here's why:
* Size difference: Most lizards are much smaller than possums. Even large monitor lizards, which can eat mammals, would struggle to take down a fully grown possum.
* Dietary differences: Lizards are primarily insectivores, eating insects, spiders, and small invertebrates. Some larger lizards may eat small rodents, but possums are too large and strong for them to hunt.
* Predation: Possums are more likely to be prey for larger predators like foxes, owls, and snakes.
While there might be some exceptions depending on the specific lizard and possum species, generally speaking, lizards do not eat possums.