Thinking about thinking
New evidence of animal consciousness
Tufted capuchins ( Cebus apella ) attribute value to foods and tools during voluntary exchanges with humans
How do rhesus monkeys ( Macaca mulatta ) scan faces in a visual paired comparison task?
Western scrub-jays ( Aphelocoma californica ) use cognitive strategies to protect their caches from thieving conspecifics
Reciprocal recognition of sifaka ( Propithecus verreauxi verreauxi ) and redfronted lemur ( Eulemur fulvus rufus ) alarm calls
Representation of two geometric features of the environment in the domestic chick ( Gallus gallus )
Oddity learning by African dwarf goats ( Capra hircus )