The rats have upgraded themselves, they are now known as HAMSTERS, harder to distinguish! some have morphed into "rabbits"...& are hoping all over the place, harder to catch...to tell if they are the same 'rats', open the mouth..the two front teeth is a giveaway...
nowadays there are so many rats because the cats themselves are so well-fed and complacent they dont even care to chase and catch rats
i've seen rats run past cats and the latter just ignore them! some rats are so huge that even the cats are afraid and run away..lol