An invasion of rodents would be enough to send a shiver along the spine of most people.
However, the Adelaide Zoo has welcomed its newest residents with open arms, even if some are the largest rodents in the world.
The seven South American rodents have gone on display for the first time this week after completing their time in quarantine.
Capybaras are the world's largest rodent and the zoo is hoping to breed from its one male and two females.
Although they could easily be mistaken for a wombat, they are actually related to guinea pigs.
Their enclosure includes two ponds because capybaras have webbed feet and love to swim.
They mate for life and in the wild will often share warrens with many other pairs.
The maras are far more active than their fellow South American arrivals and can run at speeds of up to 30 kilometres per hour.
The capybaras can be found near the main entrance to Adelaide Zoo while the maras are located near the Australian Wetland Aviary.