Using an Ambiguous Cue Paradigm to Assess Cognitive Bias in Gorillas (Gorilla gorilla gorilla) during a Forage Manipulation
In nonhumans, ‘optimism’ is often defined as responding to an ambiguous item in the same manner as to items previously associated with reward (or lack of punishment), and “pessimism” is defined as responding to an ambiguous item in the same manner as to items previously associated with a lack of reward (or with punishment). We […]
How energy and coavailable foods affect forage selection by the western grey kangaroo
We aimed to identify chemical properties of plant species that correlate with their palatability, quantify a common currency of forage for the western grey kangaroo, Macropus fuliginosus, and test the impact of frequency of occurrence on food selection. Of 24 plant species exposed to kangaroos, those high in salts and tannins were avoided, whereas those […]
The relationship between forage material and levels of coprophagy in captive chimpanzees (Pan troglodytes)
Abstract 10.1002/zoo.1430110503.abs Although coprophagy is practiced in the wild by chimpanzees (Pan troglodytes), it occurs more frequently and under more varied circumstances in captivity. This study was designed to determine if different forage materials and amount of residual undigested grain particles found in the feces might cause an increase in coprophagous behavior in those animals […]
Feeding practices for captive giraffes (Giraffa camelopardalis) in Europe: A survey in EEP zoos
As with other browsing ruminants, the nutrition of giraffes (Giraffa camelopardalis) can be challenging. Feeding browse in very large amounts is not feasible. Therefore, substitutes need to be provided that have to meet requirements and the species’ digestive capacity to the greatest possible extent. To achieve a comprehensive overview of current giraffe feeding practice in […]