Newswise — WASHINGTON – Like a proud cat leaving a bird on its owner’s doorstep, orcas – also called killer whales – may sometimes offer to share their prey with humans, according to research published by the American Psychological Association.

In the study, researchers from Canada, New Zealand and Mexico reported on 34 interactions spanning two decades in which orcas in the wild attempted to offer food to humans. The incidents took place in oceans around the world, from California to New Zealand to Norway to Patagonia.

“Orcas often share food with each other – it’s a prosocial activity and a way that they build relationships with each other,” said study lead author Jared Towers, of Bay Cetology in British Columbia, Canada. “That they also share with humans may show their interest in relating to us as well.”

The research was published in the Journal of Comparative Psychology.

Towers and his colleagues Ingrid Visser, PhD, of the Orca Research Trust in New Zealand, and Vanessa Prigollini, of the Marine Education Association in La Paz, Mexico, collected and analyzed information about 34 incidents of food sharing that they and others had experienced. On 11 of the occasions, the people were in the water when the orcas approached them, in 21 cases they were on boats, and in two cases they were on the shore. Some were captured on video and in photos, others were described in interviews with the researchers.

In order to be included in the analysis, the incidents had to meet strict criteria — in each case the whales had to have approached the people on their own (the people could not have closely approached the whales) and dropped the item in front of them. In all but one of the cases, the orcas waited to see what would happen after they made the offering, and in seven cases they tried more than once to offer the food, after the people initially refused it.

Domesticated animals like dogs and cats sometimes offer food to humans, but this research marks some of the first detailed descriptions of similar behavior in non-domesticated animals. It makes sense, according to the researchers, because orcas are intelligent and social animals that use food sharing as a way to build relationships with kin and unrelated individuals. They also often hunt prey much larger than themselves, and thus sometimes have food to spare.

“Offering items to humans could simultaneously include opportunities for killer whales to practice learned cultural behavior, explore or play and in so doing learn about, manipulate or develop relationships with us,” the researchers wrote. “Giving the advanced cognitive abilities and social, cooperative nature of this species, we assume that any or all these explanations for, and outcomes of such behavior are possible.”

Article: “Testing the Waters: Attempts by Wild Killer Whales (Orcinus orca) to Provision People (Homo sapiens),” by Jared R. Towers, Bay Cetology, Ingrid N. Visser, PhD, Orca Research Trust, and Vanessa Prigollini, MAREA (Marine Education Association). Journal of Comparative Psychology, published online June 30, 2025.

CONTACT: For reporters in North America, Jared Towers can be reached at [email protected]. For reporters in Australasia and Europe, Ingrid Visser can be reached at [email protected]. For reporters in Latin America, Vanessa Prigollini can be reached at [email protected].

The American Psychological Association, in Washington, D.C., is the largest scientific and professional organization representing psychology in the United States. APA’s membership includes 173,000 researchers, educators, clinicians, consultants and students. Through its divisions in 54 subfields of psychology and affiliations with 60 state, territorial and Canadian provincial associations, APA works to advance the creation, communication and application of psychological knowledge to benefit society and improve lives.

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