Primate errors in transitive ‘inference’
Dogs recall their owner's face upon hearing the owner's voice
Audience effects on food caching in grey squirrels ( Sciurus carolinensis )
Orientation in the cuttlefish Sepia officinalis
Rhesus monkeys ( Macaca mulatta ) succeed on a computerized test designed to assess conservation of discrete quantity
How fish do geometry in large and in small spaces
Now you see me, now you don't
Quantity discrimination in female mosquitofish
Quantity-based judgments in the domestic dog ( Canis lupus familiaris )