Ball Pythons are not allowed in Australia because of the potential “threat” to Australian native animals. These small pythons (male: 2 - 3 feet, female: 4 - 6 feet) are in no way a threat to native animals as they eat rats and mice and are non-venomous. They are too small/slow to eat things such as native birds of Australia.

For most of the day, they curl themselves up and sit in a ball (as seen in photo) all day, and are slow moving anyway. They are very shy animals, and their defence mechanism is curl into a ball. Hatchlings may try to strike, but they tame out as they grow up if handled at a reasonable amount. Unlike most snakes in Australia, they would be a great pet for anyone, even children or inexperienced reptile owners. They come in many different gorgeous morphs, and are easy to maintain. They eat every 10-14 days at least once a week and cage sizes range from 24 inches (hatchlings) to 36 inches (adults) in length. 

Handling these snakes is easy. They do not try to escape from your hand are not at all fast or fidgety, they will just stay where you put them essentially. They are very calm animals and in America, one of the top 5 beginner snakes.

Overall, these snakes should be allowed in Australia because they are no threat to wildlife at all and only eat rodents, and if let into the wild, they would die out quite quickly because of how slow they are and lack of prey.