Agro, the zoo's most aggressive saltwater crocodile. Want a closer look? Check out More Crocodile Photos. Enhance your experience: Watch Agro in Action! To learn more about the zoo, check out The Australia Zoo in Depth. Ready for more? Head back to the Australia Zoo Map.

Is three company ... or a crowd? Ask Agro, Cookie and Lucy, who share the only enclosure built for three at the Australia Zoo.

Agro, approximately 30 years old, was caught in Cattle Creek after being classified a problem crocodile. At 15 feet in length and about 1,300 pounds in weight, Agro would eat dingoes, kangaroos, feral pigs, barramundi, turtles and small- to medium-sized livestock if he were still in the wild.

Agro is the most aggressive crocodile at the Australia Zoo. He has so far managed to kill four lawn mowers, one whipper snipper, one pump and an assortment of brush hooks and rakes. He uses every crocodile trick in the book to protect his territory.

Cookie, believed to be about 30 years of age, was wild-caught in Cattle Creek, North Queensland. She is the largest female crocodile at the Australia Zoo, measuring a full 10 feet in length. At her size she would most likely eat small mammals, fish, turtles and water birds in the wild.

Cookie has a very gentle nature. She will hand-feed, looking at the food rather than the keepers' fingers. She is Agro's favorite girl. They spend all of their time together.

In the nesting season Cookie builds a huge nest and lays close to 80 hard-shelled eggs. Agro and Cookie both guard the nest site.

Lucy is about 20 years of age. She is a wild-caught female crocodile from Cattle Creek. At 8 to 9 feet in length she would likely target barramundi, water birds, turtles and small mammals in the wild.

Lucy has quite a unique temperament. Because she is young, she is very keen to impress Agro and show up Cookie. She loves to swim around, back arching and showing off for Agro and Cookie. During the nesting season, she defends her nest with gusto and will never back down from anyone.

Amazing Croc Facts

The saltwater crocodile is the largest reptile in the world, and perhaps the most dangerous. Along with alligators, saltwater crocodiles are responsible for more human fatalities per year than any other predator on Earth.

They are powerful swimmers, expertly adapted to life in the water, where they do almost all of their hunting. Their eyes and nostrils are located on top of their head, which allows them to see and hear prey while partially submerged.

Saltwater crocodiles prefer to take prey from the water's edge. These patient predators will float for hours on end, eyes focused on the bank, waiting for a thirsty animal to approach for a drink.

When a victim is spotted, the crocodile drops below the surface, inches forward to within striking range, then launches out of the water with a violent, bone-crushing attack. Hapless animals that don't get out of the way are dragged beneath the water's surface and drowned.

After twisting off a few mouthfuls of flesh, the crocodile will secure the carcass underwater beneath a log or riverbank, allowing it to rot over the course of several days, during which the reptile feeds on its prize at leisure.