A rogue scientist near a small desert town arouses the suspicion of the town's doctor when his lab assistant is found dead from a case of acromegaly, which took only four days to develop. As the doctor investigates, aided by the scientist's new female assistant, they discover that something is devouring local cattle and humans in increasingly large quantities.
When four college students trek to the Everglades to conduct extra-credit research for their biology professor, they become prey to a huge man-eating eel with nasty incisors that’s been terrorizing a nearby Florida community, based on a true story concerning an exotic species of eels that are released in the southeast from Asia. They breathe air and can survive on land.
When flesh-eating piranhas are accidentally released into a summer resort's rivers, the guests become their next meal.
In the Australian outback a vicious wild boar kills and causes havoc to a small community.
After another deadly shark attack, Ellen Brody decides she has had enough of New England's Amity Island and moves to the Caribbean to join her son, Michael, and his family. But a great white shark has followed her there, hungry for more lives.
Adventurous filmmaker Carl Denham sets out to produce a motion picture unlike anything the world has seen before. Alongside his leading lady Ann Darrow and his first mate Jack Driscoll, they arrive on an island and discover a legendary creature said to be neither beast nor man. Denham captures the monster to be displayed on Broadway as King Kong, the eighth wonder of the world.
French nuclear tests irradiate an iguana into a giant monster that viciously attacks freighter ships in the Pacific Ocean. A team of experts, including Niko Tatopoulos, conclude that the oversized reptile is the culprit. Before long, the giant lizard is loose in Manhattan as the US military races to destroy the monster before it reproduces and it's spawn takes over the world.
The residents of a rural mining town discover that an unfortunate chemical spill has caused hundreds of little spiders to mutate overnight to the size of SUVs. It's then up to mining engineer Chris McCormack and Sheriff Sam Parker to mobilize an eclectic group of townspeople, including the Sheriff's young son, Mike, her daughter, Ashley, and paranoid radio announcer Harlan, into battle against the bloodthirsty eight-legged beasts.
Researchers on the undersea lab Aquatica have genetically altered the brains of captive sharks to develop a cure for Alzheimer's disease. But there's an unexpected side effect: the sharks got smarter, faster, and more dangerous. After a big storm damages their remote research facility, they must fight for their lives.
There's a big drought in Africa. Food and water are scarce. 90,000 wild baboons suddenly start attacking humans and eating them in order to survive. Some people find themselves being hunted by the starving monkeys and must do whatever they can to stay alive.
A giant octopus, whose feeding habits have been affected by radiation from H-Bomb tests, rises from the Mindanao Deep to terrorize the California Coast.
A psychotic redneck owns a dilapidated hotel in rural East Texas, where he murders those who upset him or his business, and then feeds their remains to his pet crocodile in the swamp beside his hotel.
After accidentally killing a bear cub while celebrating graduation in the woods, four teens become the target of a seemingly unstoppable Grizzly.
An oil company expedition disturbs the peace of a giant ape and brings him back to New York to exploit him.
As a result of nuclear testing, gigantic, ferocious mutant ants appear in the American desert southwest, and a father-daughter team of entomologists join forces with the state police officer who first discovers their existence, an FBI agent and, eventually, the US Army to eradicate the menace, before it spreads across the continent — and the world.
Based on true events, Grace, her boyfriend Adam, and her younger sister, Lee, are on holiday in Northern Australia when they decide to take a tour down a river. As they drift into a swamp, their boat suddenly capsizes. Stranded in the flooded swamp, the three tourists must figure out what to do to survive as they realize they are being watched through the black water.
A scuba diving instructor, her biochemist boyfriend, and her police chief ex-husband try to link a series of bizarre deaths to a mutant strain of piranha fish whose lair is a sunken freighter ship off a Caribbean island resort.
A man enclosed in a plastic bubble, his sister, and their best friend must defend an apartment complex from the mutant Judas Breed insects.
Teens camping in a northern California retreat are terrorized by mutant insects created by evil, polluting pot farmers.
A scientific expedition sets out for Borneo to seek a flower called the Blood Orchid, which could grant extended life. Meanwhile, they run afoul of snakes and each other.