Monitoring the welfare of giraffes in two Belgian zoos
Giraffes (Giraffa camelopardalis) are a popular species held in many zoos. Welfare concerns have been expressed, and often are focussed on measuring indicators of (potential) negative welfare such as locomotory and oral stereotypies. Here we present additional data on potential positive welfare indicators, as have been suggested for ruminants, focusing on feeding time, rumination, affiliative […]
Interspecific Infanticide and Infant-Directed Aggression by Spider Monkeys (Ateles hybridus) in a Fragmented Forest in Colombia
Interspecific aggression amongst nonhuman primates is rarely observed and has been mostly related to scenarios of resource competition. Interspecific infanticide is even rarer, and both the ultimate and proximate socio-ecological factors explaining this behavior are still unclear. We report two cases of interspecific infanticide and five cases of interspecific infant-directed aggression occurring in a well-habituated […]