Abstract
For large felids in the wild, intervals between feeding events are irregular since these depend on prey availability and individual hunting success. In contrast, many zoos feed their large felids on fixed schedules. Predictable feeding schedules could induce food anticipatory behavior, like pacing, and randomizing feeding schedules may reduce this anticipatory behavior. Furthermore, random feeding schedules create more variability in the animals environment, which may reduce frustration or boredom. This case study aimed to investigate the effects of a random feeding schedule on pacing behavior of captive Asiatic lions (Panthera leo persica) in the Rotterdam Zoo, The Netherlands. Study animals were observed directly under two treatments: "fixed feeding" (i.e., two fixed feeding days per week) and "random feeding" (i.e., two semi-randomly picked feeding days per week). Under the random feeding schedule, the mean pacing proportion of lions significantly decreased compared to the fixed feeding schedule. These findings suggest that a random feeding schedule could reduce pacing, either of anticipatory or stereotypic nature, in Asiatic lions. Random feeding schedules do pose a few logistic challenges, such as zookeeper schedules and transport or storage of feed. Nevertheless, random feeding could be a relatively inexpensive strategy to reduce pacing.