Tehran suffering plague of hyper-evolved "mutant rats"

In Iran's capital city of Tehran, a rat infestation has led officials to claim that they're basically in the middle of a 1950s giant animal movie, or maybe a Star Trek episode. The rats, which are said to be "bigger than cats," are apparently the result of radiation and chemicals causing them to make a massive evolutionary leap.

According to the International Business Times:

"They seem to have had a genetic mutation, probably as a result of radiations and the chemical used on them," Ismail Kahram, Teheran city council environment adviser and university professor Ismail Kahram told Qudsonline.ir.

"They are now bigger and look different. These are changes that normally take millions of years of evolution. They have jumped from 60 grams to five kilos, and cats are now smaller than them." . . .

"We use chemical poisons to kill the rats during the day and the snipers at night, so it has become a 24/7 war," the head of the environment agency, Mohammad Hadi Heydarzadeh, said . . . So far 2,205 rats have been shot dead.

I love the idea that snipers are being used to eliminate the pests. Also, what could be better than a form of evolution where every life form just gets bigger all the time?

(Thanks for the tip, Rick Reiss!)