The little things pigs love in life

What makes pigs happy?

Working with pigs since 2006, Sarah has had a breadth of experience observing their behaviour across many different housing situations and farms. We wanted to get to the root of what a pig needs to feel happy, and what causes their behaviour to turn south.

Pigs are socially intelligent

Pigs are highly intelligent creatures, capable of performing advanced tasks, strategizing, and showing teamwork. After thousands of years of interactions with humans, they have also gathered much of the same human social intelligence that domesticated dogs have.

Our Global Farm Animal Advisor, Sarah Ison holding, a piglet. (These photos were taken at an undisclosed location in the EU)

This social intelligence is also highlighted by their unique personalities. As Sarah says, "They are amazing creatures. My favorite thing about them is their personalities. They’ve all got individual characteristics, little quirks about them that make them unique."

Because of this, pigs also require a substantial amount of mental stimulation and interaction amongst each other in order to feel satisfied. 

Pigs need enrichment

There are different forms of enrichment that promote mental and physical health.

According to Sarah, "Pigs suffer for several different reasons. Two of the main things that spring to mind are confinement and a lack of enrichment or mental stimulation in the barren, stark environments they are kept in at indoor large-scale systems."

Image: an intensive pig farm in Central America. Mother pigs are kept in individual cages, not able to socialize, exercise or even turn around.

Because of these conditions, mother pigs often become chronically depressed and bite the bars of their steel cages in frustration. They are bred to give birth to large litters of fast-growing piglets to maximise profit, but are constantly hungry because their food is restricted to limit weight gain and avoid complications whilst giving birth to large numbers of piglets.

About a week prior to giving birth, mother pigs are moved to another steel cage, where they remain closely confined during birth and beyond. A mother pig’s natural instinct is to build a nest to prepare for her piglets, but she cannot do this in a cage the size of an average fridge.

It's time to raise pigs right

Sows, or mother pigs, will also benefit if given the freedom and foraging activities necessary for them to stimulate their foraging behaviours. A highly stimulating environment will lead to a smoother pregnancy, which leads to a healthier litter of piglets as well. 

Enriched environments, where pregnant mother pigs (sows) are able to forage, rest comfortably, nest or play with materials such as straw, help them display their natural behaviours and gives them a good life worth living. 

Image: pigs in group housing, where they are free to roam and socialise

Pigs love to manipulable materials, and there are many different types depending on the life stage they are in.

"Ideally, for mother pigs or sows, straw is the best thing for them to have. But if it’s not possible to have a deep straw bedding pen, they can also have small amounts of straw in small racks or hanging baskets that they can access.

This not only keeps them occupied with things to do and mimics the natural feeding behaviour of the sows, but it also provides them with something to fill their stomachs because they need more nutrition and more gut fill during pregnancy. Pigs are very tactile animals, they like to feel with their snouts, so anything that enables that will make them happy." 

Image: pig in an enriched environment with straw.

Differences in behaviour

We asked Sarah how the behaviour of a pig kept in high welfare housing would behave, as opposed to one in low welfare housing.

She quickly expressed that "it's absolutely lovely when you observe them in group housing. They can lie next to each other, they can interact with each other socially, and they also have other activities to do. The pigs are free to root around and explore their environment, so you don’t see as much of the abnormal behaviours like sham chewing and bar biting that you'd see in confined pens."

Help pigs live better lives

• Supermarkets have the power to give pigs a life worth living. We want Tesco Lotus stores in Thailand to stop selling pork sourced from farms that use sow stalls. Send an email to the Chief Executive of Tesco PLC asking them to introduce a global pig welfare policy, banning the sale of pork from farms with sow stalls, no matter where in the world their stores are located.
• See what we are doing to move the world to raise pigs right.