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 - Daily Star

How do people kill rats that have very large sizes? I have tried with rat poison mixed into food but the rat always eats it and the rat doesn't die either.

Giant rats that are immune to poison are spreading at 'rapid speeds

Rats As Big As Cats Terrorise This UK Town

Are Rats Becoming Resistant to Poison?

Super Rats - Daily Star

Wildlife Get Caught in the Crossfire of Our Poisonous War on Rats

Giant rats: More pictures of huge rodents emerge, The Independent

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

In Defense of the Rat