Super-rats immune to poison 'growing as big as cats

Pest controllers in Liverpool claim rats are growing as big as cats and have called on the Health and Safety Executive to allow them to use more deadly poison

Super rats' as big as cats are immune to rat poison in Milton Keynes

How rats became an inescapable part of city living

Largest Rodents in the World

Super rats or sickly rodents? Our war against urban rats could be leading to swift evolutionary changes

Living with wildlife: Rats Washington Department of Fish & Wildlife

Mutant 'SUPER RATS' immune to poisons set to invade UK and plague British homes - Mirror Online

Is the super rat on the rise?

Giant Rat Kills Predators with Poisonous Hair

Scots 'super rats' are immune to poison, UK, News

Mutant SUPER RATS that grow as big as cats and thrive on poison set to invade British homes - Mirror Online