Well that’s a delightful if a bit bizarre little book.
In a nutshell, Mr. Popper is an orderinary enough man who happens to absolutely love stories about Arctic/Antarctic expeditions. He writes a letter to Admiral Drake and… gets a penguin shipped to him. One thing leads to another, he gets another penguin, they have an unusually large pile of chicks, and they go on the road.
There are all manner of things that through a more modern eye are questionable at best, animal cruelty at worst, but if you take it how it’s written it’s a fun little romp and the children enjoyed it immensely.
Now the next question is–just how inappropriate is the Jim Carrey version for children…?