In Brazil's Pantanal, the largest wetland on the planet, jaguars (Panthera onca) have traditionally been considered solitary animals that come together only to mate or raise cubs. However, recent observations overturn this idea: in an area with abundant prey, these predators display markedly more tolerant and even friendly behavior.
A thirteen-year study by the Jaguar ID project, covering 459 individuals, recorded 167 instances of interaction between pairs. Nearly 39 percent of them turned out to be social — cooperative hunting, play, mutual grooming. Another roughly 36,5 percent were neutral, when the animals simply stayed near each other without showing aggression. Only a quarter of the contacts were of a conflictual nature.
It is especially noteworthy that positive interactions more often occurred between related males. Two brothers patrolled the territory together, and sisters from different litters groomed each other. Females, by contrast, more often kept their guard up — probably because of the need to protect their cubs.
The key to this behavior apparently lies in the richness of the food supply. In the northern Pantanal, where rivers and floodplains abound with fish, caimans and hoofed animals, competition for food decreases. This allows jaguars to spend less energy on conflicts and more on tolerant contacts.
The results of the study, published in the journal Animal Behaviour, show that the social structure of jaguars is more complex than previously thought. Under conditions of high population density and abundant resources, these predators form distinctive networks of connections, in which certain individuals play the role of "bridges" between groups.
For the conservation of the species, this means that protection strategies must take into account not only the size of territories but also the possibility of peaceful coexistence of individuals in favorable habitats.
