Dingos are the primary mammalian carnivore in Australia. They compete with foxes and feral cats for small animal food sources, but have greater success with catching large prey during times of drought than do foxes and cats. For this reason, dingo populations remain high, and are thought be responsible for the loss of numerous medium-sized Australian mammals, including species of bandicoots, macropodids, and rat-kangaroos. However, some researchers suggest that dingos actually help to maintain populations of small Australian mammals. Dingos are also appreciated for their help in controlling European rabbit populations, which are pests throughout Australia (Corbett 1995, Riddle 1979).