Abstract

(…) Inter-specific behavioral interactions in the order Cetacea are diverse and often complex, including predation (e.g. Jefferson el al. 1991), “harassment” (Shane 1995 ; Shelden et al. 1995; Palacios and Mate 1996; Weller et al. 1996), inter-specific mating (Herzing 1996; Baird et al. 1998), and aggression (Ross and Wilson 1996). Here I describe an interaction involving two Pacific white-sided dolphins (Lagenorhynchus obliquidens) and a neonatal harbor porpoise (Phocoena phocoena), and discuss the “type” and potential functions of this interaction. (…)