What feral animals cause problems in Australia?

Cats, dogs and foxes all cause problems by preying on native wildlife. Many species of wildlife, which have been protected by the absence of major predators for thousands of years, do not have sufficient defence mechanisms to protect themselves against cats, dogs and foxes. Rabbits have caused a major problem since their introduction in 1860, as they eat the native vegetation on which so many Australian species rely, and they breed much faster than any of the marsupials do. Feral pigs also eat the vegetation and will attack other creatures. Cane toads are an ever-increasing problem. Not only do cane toads prey on small mammals and reptiles, but animals which may happen to prey to them are then poisoned by the toad's glands.