It didn't take long for the cats to work out thermonuclear weapons. It was guessed that way: Professor Cranberry, of the Bio-labs, set the idea down way back in the 70s.
'Y'see, there's something peculiar about the feline neurology. Something seems to be missing here. From the records. The computer's creaking, of course, but that doesn't cover all the blips. The records have been altered, I'm sure of it, and the only things I can think who would possibly have anything to gain are the cats themselves...'
Cranberry got called a crank and had to call it a day. The Bio-labs gave him a generous pension; told him it'd be better all round if he just turned a blind eye. He gave up on cats, went quite mad. Louis Wain, a painter of cats, tried the same thing. His paintings tried to express his unease about how the cats seemed to be changing. The fruitcakes from the Ministry of Health got him carted and then pumped full of drugs. Louis Claimed by the end of the first round of medication he 'could hardly breathe.' Paranoia, they said and dumped him in the secure unit with people who thought they were Elvis.