While rats are not what you would want in a kitchen & normally indicate poor hygiene , I would bet pounds to peanuts that actual photo was staged.
I was born on the waterfront with lots of water rats around .
It was how I learned to shoot , rats on a sewerage man hole pillar as the tide came in from 300 yards using a .22.
However 3 of them in a line running that close is not normal wild rat behaviour but does make for a good photo.
If rats were the health problem they are made out to be then there would be no Global warming happening as the population would be well below 1,000,000,000