The Best Giant Animal Movies
Oversized critters galore in this heaping helping of atomically irradiated beasties
Oversized critters galore in this heaping helping of atomically irradiated beasties

When flesh-eating piranhas are accidentally released into a summer resort's rivers, the guests become their next meal.

Ramon the alligator is flushed down the toilet as a baby and grows into a gargantuan monster by eating the corpses of laboratory animals who have undergone dubious hormone experiments, thus providing all the ecological and social subtext that one could possibly wish for, even if one doesn't normally go for films about giant alligators eating people left, right, and center--which is the inevitable and tragic result of Ramon's decision that the outside world looks rather more interesting than the sewers....

A vicious wild boar terrorizes the Australian outback. The first victim is a small child who is killed. The child's granddad is brought to trial for killing the child but acquitted. The next victim is an American TV-journalist. Her husband Carl gets there and starts to search for the truth. The local inhabitants won't really help him, but he is joined by a hunter and a female farmer to find the beast.

A handful of tourists looking for adventure get more than they bargained for when they cross paths with a massive man-eating beast in this thriller. Pete McKell (Michael Vartan) is a writer for an American travel magazine who has been assigned to write a story about vacationing in rugged Northern Australia. Pete signs up for a cruise along a river that's home to a large crocodile population, with tough but pretty Kate Ryan (Radha Mitchell) serving as guide. Pete soon finds he's roughing it in the Aussie wilds with an eclectic variety of travelers, including Russell (John Jarratt), who is dealing with the death of his wife; Simon (Stephen Curry), a tactless amateur photographer; and Allen (Geoff Morrell), a member of the British upper crust making the trip with his ailing spouse (Heather Mitchell) and their rambunctious daughter (Mia Wasikowska). While Kate's former husband, who also works on the river, makes a pest of himself in the early stages of the voyage, the travelers soon find they have more to worry about when their craft is attacked by a massive 25-foot crocodile, who is just clever enough to know how to trap its prey before enjoying them for dinner.

Carl Denham needs to finish his movie and has the perfect location: Skull Island. But he still needs to find a leading lady. This 'soon-to-be-unfortunate' soul is Ann Darrow. No one knows what they will encounter on this island and why it is so mysterious, but once they reach it, they will soon find out. Living on this hidden island is a giant gorilla and this beast now has Ann in its grasps. Carl and Ann's new love, Jack Driscoll, must travel through the jungle looking for Kong and Ann, whilst avoiding all sorts of creatures and beasts.

After a dinosaur-like beast - awoken from undersea hibernation by atom bomb testing - ravages Tokyo, a scientist must decide if his similarly dangerous weapon should be used to destroy it.

In the New Mexico desert, Police Sgt. Ben Peterson and his partner find a child wandering in the desert and soon they discover that giant ants are attacking the locals. FBI agent Robert Graham teams up with Ben and with the support of Dr. Harold Medford and his daughter Dr. Patricia 'Pat' Medford, they destroy the colony of ants in the middle of the desert. Dr. Harold Medford explains that the atomic testing in 1945 developed the dangerous mutant ants. But they also discover that two queen ants have flown away to Los Angeles and they are starting a huge colony in the underground flood control tunnels of that city. When a mother reports that her two children are missing, the team begin searching for them. Will they arrive in time to save the children and destroy the colony?

In the Arizona desert, Professor Gerald Deemer (Leo G. Carroll) is experimenting with growth hormones in the hopes of finding a way to increase the world's food supply. His partner in the project was recently found dead in the desert, suffering from a disease that normally takes years to advance, but, in his case, seems to have afflicted him in only a few days. The local doctor, Matt Hastings (John Agar), is puzzled by the strange case and, with Deemer's recently arrived (and very pretty) assistant, Stephanie "Steve" Clayton (Mara Corday), tries to figure out what is going on. When cattle remains are found in the countryside, evidence points to a giant tarantula as the culprit.

A disease carried by common cockroaches is killing Manhattan children. In an effort to stop the epidemic an entomologist, Susan Tyler, creates a mutant breed of insect that secretes a fluid to kill the roaches. This mutant breed was engineered to die after one generation, but three years later Susan finds out that the species has survived and evolved into a large, gruesome monster that can mimic human form.

A detective is puzzled after recent spate of deaths involving decapitations. He visits a museum when a new victim is found murdered in the same way. In the museum, he encounters an evolutionary biologist who herself is puzzled after discovering a mutated beetle that possesses both insect and reptilian DNA. The detective finds a common link between the murders, hypothalamus missing from the brains of the victims. Together they both try to defeat a monster/killer who is on a killing spree.