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Examples of the behavior of 19 different carnivore species when interacting with the puzzle box. The species represented are listed in order of appearance: red panda (Ailurus fulgens), binturong (Arctictis binturong), grizzly bear (Ursus arctos), white-nosed coati (Nasua narica), bobcat (Lynx rufus), arctic fox (Alopex lagopus), polar bear (Ursus maritimus), black bear (Ursus americanus), snow leopard (Panthera uncia), pallas cat (Otocolobus manul), striped hyena (Hyaenahyaena), spotted hyena (Crocutacrocuta), American badger (Taxideataxus), leopard (Pantherapardus), Amur tiger (Pantheratigris), river otter (Lontra canadensis), maned wolf (Chrysocyon brachyurus), wild dog (Lycaonpictus), and wolverine (Gulogulo). (From Benson-Amram et al. 2016).
Source: Sarah Benson-Amram, Ben Dantzer, Gregory Stricker, Eli M. Swanson, and Kay E. Holekamp. Brain size predicts problem-solving ability in mammalian carnivores. PNAS March 1, 2016. 113 (9) 2532-2537; doi.org/10.1073/pnas.1505913113.
Textbook Reference: The Evolution of Cognitive Skills, p. 139