In literature, when the author uses exaggeration/oversimplification of certain character traits, it is referred to as a caricature. Often insulting, caricatures can also be complimentary or even have a political purpose.
In George Orwell's political allegory, <em>Animal farm</em>, Squealer is one of the three most important animals who rebel against their human farmer. Squealer comes as a clever character with good persuasion techniques. He is, however, quite selfish and power-hungry (like most of the leaders). The very fact that he is described as having a difficulty with seeing "out of his eyes" speaks volumes about both his physical appearance and personality. He is a very fat pig, indeed, but he also only cares about his own interests.
in the story the crocodile acts wild and savage when the circus men come for him when Dr.Dolittle sees this he makes the inference that the crocodile hates the circus what background knowledge helped docter dolittle make this inference