You probably picture squirrels munching on nuts, right? But lately, some of them have started eating things you might not expect. Squirrels aren’t strict carnivores; they’re omnivores, and every now and then, they’ll hunt or scavenge meat if the opportunity pops up. This fact really changes how you see their behavior and survival tricks.
Scientists have started watching squirrels a lot more closely these days. New observations are shaking up what we know about animal behavior.
You’ll find clear examples of squirrels hunting or eating meat, why it happens, and just how adaptable their diets can get.
Are Squirrels Carnivores? New Findings and Scientific Insights
Squirrels usually stick to plants, but some groups have started hunting and eating small animals. These sightings help us understand why a mostly plant-loving animal might suddenly act like a predator.
Recent Observations of Squirrel Predatory Behavior
Researchers have caught squirrels on camera hunting, killing, and eating small vertebrates. Many squirrel species act opportunistically—they mostly eat seeds and greens, but if eggs, insects, or small animals are around, they don’t always say no.
Field reports and video clips show both adult and young squirrels hunting, especially when prey is everywhere. This usually happens when their regular food gets scarce or when prey populations explode.
When that happens, squirrels may switch things up and hunt more. They don’t all turn into meat-eaters overnight, but it definitely shows how flexible they can be.
The Case of California Ground Squirrels in Briones Regional Park
At Briones Regional Park, people recorded California ground squirrels hunting and eating California voles during a big vole boom in 2024. The team documented 74 of these events over several weeks, using marked squirrels and video. You can check out a summary of the study methods and findings in the published report from the long-term project.
These ground squirrels (Otospermophilus beecheyi) still eat mostly plants. But during the vole surge, they hunted, killed, and ate voles again and again.
That pattern really highlights how a species we think of as herbivorous can become a predator when conditions change. If you’re curious, you can see more about these park observations and the study through the University of California’s coverage: California ground squirrels hunt voles.
Key Researchers and On-Going Studies
This behavior came to light through the long-term behavioral ecology of California ground squirrels project. Researchers from the University of California, Davis and the University of Wisconsin–Eau Claire gathered the field data.
Jennifer E. Smith and Sonja Wild played key roles in recording and analyzing the vole-hunting events. Studies are still going, with scientists trying to link hunting to vole population peaks, squirrel social life, and what they need nutritionally.
You can follow updates in journals like the Journal of Mammalogy or dig into the detailed study pages with videos and raw observations. For a broader press summary, check out the UC Davis write-up: Carnivorous squirrels documented in California.
Squirrel Diet: Omnivore Habits and Dietary Flexibility
Squirrels eat a wide mix of plant and animal foods. Their diet shifts with the seasons, their species, and honestly, whatever you leave out in your yard.
Typical Foods Squirrels Eat in the Wild
Seeds, nuts, and fruits make up most of what squirrels eat. Tree squirrels love acorns, walnuts, and berries.
They also snack on fungi and green plant bits when they find them. Squirrels stash nuts for winter, hiding them in lawns or under leaves.
This caching helps them get through when fresh food is hard to find. You might even spot their buried stashes in your own yard.
Insects and eggs show up in their diet too, but in smaller amounts. These add protein, especially for growing young or nursing moms.
Ground squirrels eat more grasses and seeds than their tree-dwelling cousins.
When and Why Squirrels Eat Meat
Squirrels don’t usually go looking for meat, but they’ll eat it if the chance comes up. You might catch them eating insects, bird eggs, or even small animals if plant foods run low or if they need a protein boost for breeding.
Researchers have filmed California ground squirrels hunting and eating voles when voles are everywhere. Hunting seems to spike when small prey gets super abundant.
You might also see squirrels eating meat after raiding bird feeders or grabbing easy meals like roadkill or nestlings. Meat eating is usually seasonal and depends on what’s around.
If you want fewer squirrels eating meat in your yard, keep bird nests safe, don’t leave pet food out, and cover your compost.
Omnivore Versus Carnivore: What’s the Difference?
A squirrel eats both plant and animal matter, so it’s an omnivore. Carnivores, on the other hand, mostly stick to meat.
Squirrels land in the omnivore camp because they get most of their calories from plants and seeds. Sure, they’ll eat animal matter, but that’s more of an occasional thing.
Picture diet as a spectrum. Tree squirrels usually stick to plants, but some ground squirrels show a bit more flexibility and go for meat now and then.
If you look at California ground squirrels, you’ll notice their behavior can shift along that spectrum. Just because they hunt when the chance comes up doesn’t mean they’re true carnivores.
