Vol.25, No.1 JUNE 2018

<NOTE>
Four Cases of Grooming Sessions between Chimpanzees and Guenons at the Kalinzu Forest Reserve, Uganda
Takumi Tsutaya, Natsumi Aruga, Hodaka Matsuo, & Chie Hashimoto

<NOTE>
Deposit and theft? Two unusual interactions over wild plant food between adult chimpanzees in Mahale
Takuya Matsumoto & Hiroko Sakuragi

<BOOK REVIEW>
Following Fifi. My Adventures among Wild Chimpanzees: Lessons from Our Closest Relatives (By John Crocker); Among Chimpanzees. Field Notes from the Race to Save Our Endangered Relatives (By Nancy J Merrick)
William C McGrew

<Erratum>

<Editor’s Note>