It's not fast, just bigger and heavier than average, but it's voracious and breeds fast.
The giant African snail, a species that can be dangerous to humans, is invading an area of Florida and worrying the authorities.
This mollusk, which can measure up to 20 cm in length, is "an agricultural plague that feeds on more than 500 different types of plants", explains Jason Stanley, a biologist with the Department of Agriculture.
"Another problem with this snail, he adds, is that it carries the rat lungworm", a parasite which, once transmitted to humans, can cause meningitis and have serious effects on the brain and spinal cord.
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Faced with this scourge, the city of New Port Richey has been placed under quarantine with a ban on leaving any plant in the town.
A single giant African snail can lay up to 2,000 eggs a year, Mr Stanley adds, an impressive reproductive rate that makes it a danger to the state's important agricultural sector.
1,200 specimens of this invasive species have already been captured in Pasco County.
To overcome this destructive snail, the authorities use metaldehyde, a kind of anti-slug that is harmless to humans and animals, the state promises.