Given the extensive literature on predator-prey interactions in fluid media and the substantial differences between fluid medium locomotion and terrestrial locomotion (to which we now refer), we have adopted the reviewer's suggestion to define that we only deal with terrestrial animals.
Equines, mostly horses and donkeys, were also reared in relatively high numbers, commonly used as transport when traversing the extensive deep sand and predator-filled Kalahari terrain.
The more extensive presence of these predators within regions where they are otherwise rare or completely absent indicates that anthropogenic effects, not latitudinal gradients, limit the presence of these large-bodied fishes.
In Tasmania there is emerging evidence that feral cat populations are increasing following wide-ranging and extensive declines in the apex predator, the Tasmanian devil, from a consistently fatal transmissible cancer.
In the mid-18th century, when British, Dutch, French, and Portuguese traders provided a profitable contraband business in hides and tallow in the frontier regions around Buenos Aires, gauchos arose to hunt the large herds of escaped horses and cattle that had roamed freely, bred prodigiously, and remained safe from predators on the extensive Pampas.
Yet they suffer from being specific to single predators, the need for extensive empirical testing and no clear design criteria that ensures they will be effective in blocking predator DNA and not block prey DNA.
The University of the West Indies also runs an extensive research, monitoring, and non-native predator control program to help released iguanas thrive.
Because of its wide spread and importance, there is an extensive literature concerned with three-species predator-prey systems (see, e.g., [1 6]).
Do settlers face a pathogen, predator, or competitor that causes extensive post-settlement mortality?
In contrast, other nations are virtually devoid of sheep predators, particularly islands known for extensive sheep husbandry.
