Are Rats Becoming Resistant to Poison?

Mutant Super Rats Invading Liverpool': Pest Controllers Say Beasts Are Becoming Immune To Poison (PICTURES)

Brits warned not to poison 300 million super-rats taking over UK, here's why

Hermie Controlling rats and mice

Man v rat: could the long war soon be over?, Science

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

Human Footprint, How NYC Became a Rat Kingdom

Poison-immune 'super rats' spreading at an 'alarming' rate, shocking ITV documentary reveals - Irish Mirror Online

Are rats resistant to poison?

Living with wildlife: Rats Washington Department of Fish & Wildlife

Are rats resistant to poison?

3 Secrets to Get Rid of Rodents That are Immune to Poison

Rat Myths and Facts - Metex Online