title: Spiteful animals still to be discovered.
authors.affiliation: Zoologisches Institut, Bern University, Ethologische Station Hashli, Wohlenstrasse 50a, 3032 Hinterkappelen, Switzerland.
authors.forename: L
authors.initials: L
authors.lastname: Keller
authors.forename: M
authors.initials: M
authors.lastname: Milinski
authors.forename: M
authors.initials: M
authors.lastname: Frischknecht
authors.forename: N
authors.initials: N
authors.lastname: Perrin
authors.forename: H
authors.initials: H
authors.lastname: Richner
authors.forename: F
authors.initials: F
authors.lastname: Tripet