I was just listening to my Narnia audiobooks while I was working on some things, and I noticed this passage.
“Wouldn’t it be dreadful if some day, in our own world, at home, men started going wild inside, like the animals here, and still looked like men, so you’d never know which were which?” – Lucy, Prince Caspian by C.S. Lewis
It jumped out at me so, that I remembered another passage further on in the series, that is related.
What followed was rather horrible. Tirian felt quite certain (and so did the others) that the Cat was trying to say something: but nothing came out of his mouth except the ordinary, ugly cat-noises you might hear from any angry or frightened old Tom in a backyard in England. And the longer he caterwauled the less like a Talking Beast he looked. Uneasy whimperings and little sharp squeals broke out from among the other Animals.
“Look, look!” said the voice of the Bear. “It can’t talk. It has forgotten how to talk! It has gone back to being a dumb beast. Look at its face.” Everyone saw that it was true. And then the greatest terror of all fell upon those Narnians. For every one of them had been taught – when it was only a chick or a puppy or a cub – how Aslan at the beginning of the world had turned the beasts of Narnia into Talking Beasts and warned them that if they weren’t good they might one day be turned back again and be like the poor witless animals one meets in other countries. – The Last Battle by C.S. Lewis