Outside the diet: Why crocodiles don’t eat capybaras

The strangely peaceful relationship between crocodiles and porpoises always attracts the attention of those who follow the wildlife of South America. Although they share the same lakes, rivers and shorelines, what we see is not persecution, but a surprisingly stable coexistence – something that has intrigued researchers for years.

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Rather than seeing a disruption in the food chain, experts explain that capybara behavior helps understand why attacks are so uncommon. The world’s largest rodent is social: it stays in groups, maintains constant communication through warning sounds, and is adept in the water, which reduces the chances of becoming a target.

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On the other hand, field analyzes indicate that it is not always beneficial for a reptile to invest energy in capturing such an alert and fast animal. Thus, the option of saving effort weighs more than the possibility of risky hunting. These behaviors favor the coexistence of the two.

Because of the behavior of both animals, it is possible for them to live in harmony

This dynamic is also reflected in the urban environment, where rodents have found safe places in parks, embankments and canals. With abundant plants and few natural predators, these spaces act as refuges — and, in some cities, have changed routines to adapt to human movement.

Another important point is that porpoises do not compete with crocodiles for food, as they exclusively consume plants. Furthermore, although they are peaceful, they have effective means of defense, such as strong teeth and good aquatic locomotion, characteristics that discourage potential attack attempts.

All of these factors together help explain why these two animals, despite sharing territory, are able to share the same environment without frequent conflicts.