Crocodile is a very fierce animal, they belong to the Reptilia, is a reptile. There is a saying that crocodiles are "the most intelligent reptiles", which refers to the fact that crocodiles have a high IQ among reptiles, but compared with some more advanced animals, crocodiles have a low IQ. Although crocodiles have a long history of existence, reptiles themselves are relatively low-level animals, compared with birds and mammals, so their IQ will not be particularly high.
Of course, crocodiles are indeed more intelligent than reptiles, and their intelligence is reflected in the process of hunting. For example, when they want to prey on land animals, they will look for the most suitable time, that is, when land animals drink at the water's edge. At this point, crocodiles will quickly use their tails to sweep the drinking land animals into the river, and then bite and eat them when they do not react.
As mentioned above, crocodile IQ is relatively smart among reptiles, and it can reflect their IQ when hunting. However, compared with other more advanced animals, the crocodile's intelligence is not particularly high, and has not reached the level of recognition of the Lord. Some crocodiles can be farmed and used as pets, such as Thai crocodiles. Even if they are raised for a long time, they will not recognize people, only food. Therefore, they will not have all kinds of intimate activities with their owners, and the difference between dogs and kittens is relatively large, because breeding crocodiles can only be used for viewing.