Differences in the Cognitive Skills of Bonobos and Chimpanzees

Bonobos Exhibit Delayed Development of Social Behavior and Cognition Relative to Chimpanzees

(2010) Victoria Wobber et al.   CURRENT BIOLOGY

Differential changes in steroid hormones before competition in bonobos and chimpanzees

(2010) Victoria Wobber et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Keeping track of time: evidence for episodic-like memory in great apes

(2009) Gema Martin-Ordas et al.   ANIMAL COGNITION

Reaching around barriers: the performance of the great apes and 3–5-year-old children

(2009) Petra H. J. M. Vlamings et al.   ANIMAL COGNITION

A fruit in the hand or two in the bush? Divergent risk preferences in chimpanzees and bonobos

(2008) S. R. Heilbronner et al.   Biology Letters

Great apes' (Pan troglodytes, Pan paniscus, Gorilla gorilla, Pongo pygmaeus) understanding of tool functional properties after limited experience.

(2008) Esther Herrmann et al.   JOURNAL OF COMPARATIVE PSYCHOLOGY