Sloth images1/2/2023 ![]() “For the first time, we have data to support what those of us who work closely with this species know to be true-that these animals are remarkably intelligent, and it is worth delving deeper into their cognitive abilities. ![]() “As a sloth bear keeper, I see evidence of Niko and Remi’s intelligence, communication, problem-solving skills and even their sense of humor,” Tabellario said. At the opposite end of the spectrum, omnivore kibble and orange were some of the least desirable foods. Both sloth bears selected mealworms as a preferred food, as well as nuts, prunes and raisins. According to keepers, Niko and Remi made their decision in a matter of moments, and quickly indicated their preferences when a food in the “high-preference” category was presented. Niko and Remi looked closely at the photos, assessed each image and blew on the option they preferred. Keepers then printed high-resolution photos of each food option, which the bears had not seen prior to this study, and held up two images at a time. She showed the least amount of interest in oranges, honeydew melon, omnivore kibble, broccoli, celery and zucchini. Remi’s most preferred foods included mealworms, raisins, prunes, pecans, Brazil nuts and cheerios. He was least fond of orange, mango, omnivore kibble, butternut squash, turnip and banana. Niko’s top six favorite foods included almonds, mealworms, leaf-eater biscuits, raisins, prunes and grapes. At the Zoo, Niko and Remi receive a comparable diet that includes a variety of insects, fruits, vegetables, nuts, bear chow (kibble) and cereal. In the wild, insects-mainly ants and termites-comprise the majority of the sloth bears’ diet, though they have been documented eating seasonal fruits, honey, carrion and farm crops. At the conclusion of this step, keepers narrowed down the options to six high-preference foods and six low-preference foods per bear To determine which foods the bears preferred, keepers presented Niko and Remi with 25 and 34 foods to choose from, respectively, and the bears would blow at the item to indicate which food they preferred to eat. The bears use their lips like a vacuum, blowing dirt and debris away to uncover insects, then sucking them up to consume them. Sloth bears have a long snout, flexible lips, nostrils that can close and large lung capacity. To determine whether the Zoo’s sloth bears could identify 3D objects by looking at 2D photos, animal keepers chose food as the study’s subject, knowing that the bears would be familiar with the choices presented and that viewing the images would elicit a behavioral response. We are always looking for ways to increase our animals’ wellbeing, and this is a great opportunity for Niko and Remi to have a say in the way we manage them.” “Applying what we have learned from this cognition study, we can present the bears with photos of their enrichment items or their habitats to learn even more about their preferences. “Now that we know that sloth bears can make the connection between a photo of food and diet items that they are familiar with, we can use this information to give the bears more choice and control over how they spend their day,” said Stacey Tabellario, Asia Trail keeper at the Smithsonian’s National Zoo and the paper’s lead author. The findings of this study were published Jan. Animal keepers at the Zoo’s Asia Trail exhibit are the first to confirm that sloth bears can recognize 2D images as representations of 3D objects, a discovery that can enable institutions that exhibit and breed this species to better manage and enrich the lives of individual animals in their care. ![]() Given the choice between mealworms and melons, the Smithsonian’s National Zoo’s sloth bears-6-year-old female Remi and 5-year-old male Niko-will almost always choose the former, even when their diet is presented to them in the form of a photo.
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