Whole-Carcass Meals May Give Zoo Lions a More Wild-Like Rhythm
carcass
The body of an animal used as food.
pacing
Repeatedly walking back and forth in the same area.
physiological measurements
Checks of how the body is working.
What happened
An Australian study found that changing both the food and schedule changed zoo lions’ behavior. Researchers from Adelaide University and Monarto Safari Park observed three adult male African lions. About every nine days, staff provided whole animal carcasses. During the study, the lions received about 200 kilograms of carcasses. The food stayed available for up to three days.
The team recorded the lions continuously for three months. Eight infrared cameras captured feeding, resting, moving, and pacing. Researchers compared behavior before and after the new routine.
Why the schedule matters
Wild lions do not eat at the same time every day. Their feeding depends partly on hunting success. A successful hunt can create a large meal, followed by a longer wait. The researchers wanted to know whether zoo lions would show a similar pattern. Whole carcasses also change the work of eating. Lions can tear, pull, move, and handle the food for longer.
What the cameras showed
On carcass-feeding days, the lions spent almost three times longer eating than usual. They also fed more often and for longer stretches. They tore, pulled, manipulated, and consumed the carcasses. After feeding, they spent much longer lying down and resting. During the fasting period, their activity rose gradually. Together, these changes resembled the feeding pattern reported in wild lions.
The team also watched pacing, a repeated back-and-forth walk. Pacing rose slightly over the study. However, it did not consistently increase as the lions went longer without food. The largest increases came near keeper arrivals and moves between habitat areas. This suggests that routine and feeding expectation may have mattered more than hunger alone. The study also found no increase in aggression or disruption of social stability.
Why it matters for zoos
The result points to a broader lesson about animal care. A feeding plan affects more than calories. It can shape how long animals work for food, when they rest, and when they become active. Care teams may learn more by watching a full feeding cycle. A short observation right after a meal could miss changes lasting several days.
The study does not prove that every zoo should copy this schedule. A wild-like behavior pattern is not, by itself, a complete measure of health or welfare. It does show a practical way to ask better questions about captive carnivores.
What remains unknown
The experiment involved only three adult male lions at one South Australian facility. The result may not apply to females, younger lions, other groups, or other zoos. The researchers mainly measured behavior. The report does not provide a full picture of the lions’ internal physical responses. It also cannot show whether the same routine would work safely over a much longer period.
What researchers will watch next
Future work could combine long-term behavior records with physiological measurements. Researchers also need to study more lions and longer periods. For now, the clearest finding is simple: the timing and shape of a meal can influence behavior for days, not just minutes.
Source: ScienceDaily report
Whole Meals Changed How Zoo Lions Ate and Rested
📰 Full story: Whole-Carcass Meals May Give Zoo Lions a More Wild-Like Rhythm
Three male lions followed a schedule closer to wild feeding.
carcass
The body of an animal used as food.
infrared cameras
Cameras that can record animals in dark conditions.
pacing
Walking back and forth repeatedly.
💡 The gist
- The lions received whole animal carcasses about every nine days.
- They ate for almost three times longer than usual.
- Their resting and moving followed a more wild-like pattern.
Adelaide University, an Australian university, studied the lions. Monarto Safari Park, an Australian wildlife park, hosted the study. Researchers watched three adult male African lions.
The lions received about 200 kilograms of carcasses during the study. Food stayed available for up to three days. Eight infrared cameras recorded the lions continuously for three months. Researchers compared the new routine with the earlier routine.
On feeding days, the lions ate much longer. They also ate more often. They tore, pulled, moved, and handled the carcasses. These actions gave them more work during meals. Afterward, the lions rested for longer. As the days without food continued, their movement slowly increased.
This pattern matters because wild lions do not eat at identical times each day. Their feeding depends partly on hunting success. A large meal can be followed by a long rest. The zoo lions showed a similar sequence. They ate, rested, and became more active later.
Researchers also watched pacing. Pacing means walking back and forth repeatedly. It did not rise steadily as the lions waited longer for food. It rose most around keeper arrivals and moves between habitat areas. This suggests routine and expectation may affect pacing. Hunger may not be the only cause.
The study found no increase in aggression. It also found no disruption to the group’s social stability. That is useful information for animal care. Still, the study involved only three adult males. It cannot represent every lion or every zoo. The researchers mainly measured behavior, not the full condition of the body.
Future work could combine behavior records with physical measurements. Scientists also need to study more lions and longer periods. The main lesson is clear. Meal timing and meal shape can influence behavior for days.
Source: ScienceDaily report
Lions Ate, Rested, and Moved Like Wild Lions
📰 Full story: Whole-Carcass Meals May Give Zoo Lions a More Wild-Like Rhythm
A bigger meal changed the lions’ daily rhythm.
keepers
People who care for animals at a zoo.
Monarto Safari Park
The Australian zoo where the lions were watched.
Adelaide University, a school that studies animals, watched three lions. Monarto Safari Park, a zoo in Australia, held the study.
About every nine days, the lions got a whole animal to eat. The food stayed there for up to three days. The study used about 200 kilograms of animal food. Eight cameras watched for three months.
The lions ate for almost three times longer than before. Then they rested for a long time. Later, they moved more again. Wild lions can eat a lot, then rest. The zoo lions showed a similar pattern.
The lions did not fight more. Their group did not become less peaceful. Sometimes they walked back and forth. This did not rise only because food was missing. It happened more when keepers arrived or moved the lions.
Only three lions were watched. We do not know if every lion acts this way. Researchers want to watch more lions. They also want to check how the lions’ bodies are doing.
Source: ScienceDaily report