Surprising Facts About Pigs: Intelligence & Behavior

Evidence-based pig facts about intelligence, memory, social behavior, cleanliness, smell, vocalizations, diet and human interaction, with BF Farm experience.

Pigs are intelligent, social, highly sensory animals that learn routines, remember information, communicate with one another, and use behavior such as wallowing to manage their environment. After raising Kunekunes since 2011, I have also learned that some of the most repeated “pig facts” online are exaggerated. The interesting part is that the well-supported facts are impressive enough on their own.

1. Pigs Can Learn and Remember

Research reviews document substantial learning and memory ability in pigs across spatial, operant, and other cognitive tasks. What pigs remember, and for how long, depends on the task, so I would not attach a dramatic fixed number of years to their memory. The evidence is still strong that pigs can learn from experience and retain useful information. [1]

I see the practical side of that every day. Kunekunes learn feeding routines, recognize familiar handling patterns, and notice very quickly when a gate, feeder, or daily routine has changed. Farm observations are not a substitute for controlled research, but they make the research easy to recognize in real life. Our separate Kunekune intelligence guide goes much deeper into cognition and problem solving.

2. Pigs Have Learned a Joystick-Operated Video Task

Four-step diagram showing a pig moving a joystick, the joystick moving a cursor, the cursor contacting a target wall, and successful contact producing a food reward — The 2021 study tested whether pigs could learn the relationship between their own joystick movement and a visual outcome on a monitor; successful target contact produced a food reward.

In a controlled study, pigs learned to manipulate a joystick that moved a cursor toward targets on a screen. They did not perform the task exactly as a person would, and the study should not be simplified into “pigs can play video games.” What it did show was that pigs could learn a novel relationship between their own movement and a visual outcome. [2]

3. Pigs Are Strongly Social Animals

A pale cream Kunekune adult and a smaller tan youngster graze side by side in a grassy field with bare trees in the background. — Social behavior is part of ordinary pig life. Compatible pigs often forage, rest, explore and move through their environment alongside one another.

Pigs form social relationships and respond to the animals around them. International pig-welfare guidance recognizes social contact, adequate space, access to resources, and management of aggression as important parts of pig welfare. [3]

That social nature is one reason I normally recommend that a first-time owner plan for two compatible Kunekunes rather than a single pig. Individual pigs differ, but companionship, group dynamics, and predictable handling matter enormously in day-to-day management.

4. Pigs Are Cleaner Than Their Reputation Suggests

Overhead pig pen layout separating a dry resting area, feed and water area, shaded wallow and cooling area, and elimination area — With enough room, pigs can separate sleeping, feeding, cooling and elimination activities instead of being forced to use one crowded space for everything.

Given enough room, pigs commonly separate resting and feeding areas from elimination areas. Mud does not mean a pig “likes being dirty.” Wallowing is normal behavior and is especially important in warm weather because pigs have limited ability to cool themselves by sweating. Veterinary guidance also recognizes the value of separate resting and elimination areas when pigs have enough space to express that behavior. [4]

On pasture, I see the same pattern with Kunekunes. When they have room and a dry sleeping area, they generally do not choose to foul the place where they bed down.

5. Smell Is One of a Pig's Most Important Senses

Spotted BF Farm pig investigating grass and soil closely with its snout — A pig experiences much of its environment through the snout. Foraging and investigating the ground make that sensory emphasis easy to see in ordinary farm behavior.

Pigs have an unusually large olfactory-receptor gene repertoire. A genomic analysis identified 1,113 functional olfactory-receptor genes, helping explain why smell is so important in foraging and environmental investigation. [5]

Anyone who feeds pigs has seen the practical version of this. A Kunekune can be calmly grazing and become very interested the moment food is opened somewhere nearby.

6. Pig Vocalizations Carry Information

Pigs do much more than grunt at random. Acoustic research has found measurable differences in calls produced in different contexts, including contexts associated with positive and negative states. That is more defensible than the popular claim that pigs have one fixed “20-word language.” [6]

For an owner, the useful lesson is simple: learn what is normal for your pigs. A change in vocalization, appetite, movement, or social behavior can be more useful than memorizing a list of supposed pig “words.”

7. Pigs Are Omnivores, but That Does Not Mean They Should Eat Anything

Pigs can consume both plant and animal material, but a willingness to eat something does not make it a balanced diet. Swine still need appropriate energy, amino acids, minerals, vitamins, fatty acids, and clean water for their age and physiological state. [7]

That matters with Kunekunes because their grazing ability sometimes gets turned into the equally misleading claim that they can live on grass alone. I still treat pasture as part of the feeding program, not as an excuse to ignore balanced nutrition.

8. Pigs Can Learn From and Respond to People

Research on domestic-animal cognition includes evidence that pigs can use human social cues, while welfare guidance recognizes positive, predictable human contact as useful enrichment. [8] [3]

That has always been one of the most obvious things about working with Kunekunes. Calm, consistent handling changes how easy animals are to examine, move, feed, and manage. They learn what to expect from people.

9. A Companion Pig Can Be a Long-Term Commitment

Lifespan varies with breed, genetics, health, purpose, and husbandry. Veterinary guidance for miniature pet pigs gives a broad range of about 8–20 years, with roughly 10–15 years described as typical. I would not apply that number blindly to every pig or every production setting, but it is a useful reminder that a pig kept as a companion can be a long-term responsibility. [9]

Popular Pig “Facts” I Do Not Treat as Settled

You will often see exact claims that pigs run 11 miles per hour, remember every person for a particular number of years, have exactly 20 distinct “words,” or dream just like humans because they experience REM sleep. Some of those claims may have a reasonable idea behind them, but the precise versions are repeated far more often than they are supported by strong primary or veterinary evidence.

I would rather tell readers what the evidence actually supports than make the animal sound more remarkable by exaggerating it.

What These Facts Mean for Kunekune Owners

The practical lesson is not that pigs need to “beat” dogs, primates, or children in an intelligence ranking. It is that pigs are behaviorally complex livestock. They benefit from social contact, predictable handling, appropriate space, opportunities to explore, good nutrition, comfortable shelter, and management that pays attention to individual behavior.

That is also why firsthand experience belongs beside the research. Science can tell us what pigs as a species are capable of; years of daily husbandry teach you how those abilities show up in individual animals.

Sources & References

About the Author

I have raised Kunekunes at BF Farm since 2011. The farm observations in this article come from years of daily feeding, handling, breeding, pasture management, and simply watching pigs behave. I use those experiences to make the research easier to understand, but I keep species-wide claims tied to published evidence rather than treating one herd as proof of what every pig will do.