Lions in the wild follow an unpredictable rhythm. After a successful hunt, they may spend hours feeding before resting for extended periods. Their next meal depends on hunting opportunities, creating natural cycles of intense activity, eating and recovery.

For lions living in zoos, feeding schedules are usually more predictable. Now, Australian researchers have discovered that introducing whole animal carcasses into a carefully managed feeding routine can encourage behaviours resembling those observed in the wild.

The findings, published in Applied Animal Behaviour Science, could help wildlife facilities develop more natural feeding practices.

Why Feeding Habits Matter

Wild lions rarely eat at exactly the same time each day. Their feeding patterns depend on prey availability, hunting success and competition within their social groups.

When a large animal is caught, lions spend considerable time tearing, pulling and consuming its carcass. These activities involve physical effort and behaviours associated with their natural ecology.

Zoo diets are designed to meet nutritional requirements, but food preparation and delivery can reduce opportunities for these activities. Researchers wanted to understand whether introducing whole carcasses could influence how captive lions behave throughout their feeding cycles.

Inside The Australian Experiment

The study was conducted by Adelaide University and Monarto Safari Park in South Australia. Scientists observed three adults male African lions over three months, comparing their behaviour before and after whole carcasses were introduced into an existing feast-and-fast feeding schedule.

During the experimental phase, the animals received approximately 200 kilograms of carcasses, provided every nine days. Food remained available for up to three days.

Eight infrared cameras continuously recorded the lions, allowing researchers to examine behaviour throughout the day and night. This detailed monitoring revealed changes extending well beyond the moments when food was first provided.

Lions Spent Longer Eating

The most striking difference involved feeding duration. On days when whole carcasses were available, the lions spent almost three times as long eating compared with their usual feeding behaviour.

They also engaged more frequently in tearing, pulling and manipulating food, activities that resemble those performed by wild lions after a successful hunt.

Lead researcher Lesia Hryhorenko from Adelaide University explained that whole-carcass feeding offered benefits extending beyond nutrition because it allowed lions to perform important natural feeding behaviours over longer periods.

The results suggest that the way food is presented can significantly influence animal activity.

A More Natural Daily Rhythm

Following substantial meals, the lions spent longer resting and recovering. As the fasting period progressed, their activity gradually increased again. This repeating pattern of feeding, resting and renewed movement resembled the natural cycles documented in wild lion populations. The findings indicate that feeding schedules can influence behaviour for several days, making long-term observation particularly important.

What About Stress And Aggression?

Researchers also examined pacing, a repetitive behaviour sometimes associated with anticipation or frustration in captive carnivores.

Although pacing increased slightly during the study, it did not consistently become more frequent as the lions went longer without food. Instead, increases were associated with predictable events, including keeper arrivals and movement between enclosure areas.

Importantly, researchers observed no increase in aggression or disruption to the lions' social relationships during carcass-feeding events.

What This Means For Zoos

Associate Professor Alexandra Whittaker emphasised that feeding strategies should be evaluated across entire feeding cycles because behavioural changes can continue for days after a meal.

However, the study involved only three male lions at one facility, limiting how broadly its findings can be applied. Future research could examine larger groups and combine behavioural observations with physiological indicators of welfare.

For now, the results suggest that thoughtfully designed feeding routines may offer captive lions more opportunities to express their natural behaviour, helping zoos better understand the needs of these powerful predators.