Australia has numerous predators, but fewer than other continents.
There is a class of marsupials which are carnivorous marsupials; these are known as the dasyurids. This group includes creatures such as the Tasmanian devil, the extinct Tasmanian tiger, the quoll and smaller insectivorous marsupials such as the antechinus.
As well, there are many Birds of Prey, such as Wedge-tailed eagles, hawks and kites. The large monitor lizard known as the goammas is a predator, as well as a scavenger. Australia is also home to some of the world's most venomous Spiders.
They have few predators and lots of food in Australia. They also breed at a faster rate than the native doves of Australia.
No. Deer are not native to Australia. Deer were introduced into Australia for hunting and farming during the 1800s, and they have thrived in the absence of major predators. Feral deer are now quite a problem in Australia.
One of the reasons why platypuses are found only in Australia is likely to be because of the lack of predators in Australia. Introduced predators such as foxes and environmental changes brought by Man have caused more damage to the platypus population than the few native predators. With the exception of Antarctica, which remains largely uninhabitable, Australia was the last continent to be settled by Europeans, so the platypus has been able to thrive here.
There are three species of eagle that are native to Australia, the wedge-tailed eagle, white-bellied sea-eagle, and the little eagle. For each species the adults are avian apex predators and have no natural predators but must defend their eggs and nestlings against nest predators such ascorvids, currawongs, and other eagles. The biggest threat to each of the specifies is humanity.
The top native predators in Australia are the Wedge-tailed eagle, the Tasmanian devil and the various species of quolls. The dingo is a top predator also, but it is a relative newcomer, having been brought to Australia by the Aborigines several thousand years ago.
If, by "parakeets" (a term not used in Australia) you mean budgerigars, then any of the larger birds of prey such as falcons, hawks and owls are their natural predators, along with quolls which are carnivorous, nocturnal marsupials that hunt in trees. Predators not native to Australia include feral cats.
Native predators in Australia include dasyurids (carnivorous marsupials) such as the Tasmanian devil and the quoll. There are many smaller dasyurids which prey on lizards, insects and (rarely) other small mammals, and these predators include the phascogale, kowari, dunnart, antechinus and the planigale. There are native birds of prey such as the wedge-tailed eagle, and various members of the Australian hawk family, buzzards, kites, owls, goshawks and falcons. Kingfishers and kookaburras are also birds of prey. Among the reptiles, all snakes are predators, as are goannas (large monitor lizards) and other carnivorous lizards. There are many introduced predators in Australia, such as the dingo, which is sometimes considered native because it has been in Australia for so long. Cats, dogs, foxes and feral pigs are all introduced predators.
An adult wedge-tailed eagle, native to Australia, has no natural predators. The chicks, however, can be preyed upon by Currawongs, black-breasted buzzards and feral cats.
Some of the native predators found in Australia are the wedge-tailed eagle, Tasmanian devil, saltwater or estuarine crocodile, freshwater crocodile, goanna, funnel-web spider, great white shark, taipan, copperhead, red bellied black snake, brown snake, quoll and the dingo (not truly native as it did not originate on the continent). Introduced predators include foxes, dogs, cats, feral pigs and cane toads.
No. Cheetahs are not native to Australia.
No. Goldfish are not native to Australia.
yes the brolga is native to Australia