Updated 7 Sept 2026
The short answer is that nutrition can support wellbeing, but behaviour is influenced by the whole picture.
Good nutrition fuels every walk, pounce and nap, and it may also support your pet’s energy levels, brain health and overall wellbeing. And we’re not just talking about the “hangry” moments before dinner or the excitement of spotting a full food bowl.
Your pet needs a complete and balanced food appropriate suitable for their species, life stage and individual needs – and one they enjoy and tolerate well. How and when that food is served can also support predictable routines, enrichment and natural behaviours.
Food isn’t a magic solution to behaviour concerns. Health, environment, routine, previous experiences and individual temperament can all influence how a pet behaves. Nutrition works as part of that bigger picture, alongside suitable activity, enrichment, reward-based training and veterinary care when something doesn’t seem right.
Why good nutrition matters
Good nutrition isn’t defined by one food format, ingredient or impressive-looking number on the pack. A high meat or protein percentage doesn’t automatically make one food better than another, just as a familiar ingredient list doesn’t show whether the finished recipe provides everything your pet needs.
What matters is the whole diet. Your pet's food should be complete and balanced, appropriate for your pet’s species and life stage, suited to their individual needs and something they enjoy and tolerate well.
Food fuels the body and brain
Every walk, pounce and sprint to the food bowl takes energy. So do the jobs you can’t see, from keeping the heart beating and digesting dinner to powering the brain.
How much energy your pet needs depends on factors such as their species, life stage, size, activity level, body condition and health. But calories are only part of the story. A complete and balanced food also provides protein, fats, vitamins, minerals and other essential nutrients in the right amounts and proportions.
Those nutrients must also be digestible enough for your pet’s body to absorb and use them. This is why the nutritional quality and suitability of the finished food matter more than any single ingredient or front-of-pack claim.
The gut and brain communicate
The gut–brain axis is the two-way communication network connecting the digestive system, gut microbiome and brain. Signals can travel through the nervous, immune and hormonal systems, as well as through compounds produced by microbes in the gut. This helps explain why stress can affect appetite and digestion.
The existence of the gut–brain connection doesn’t mean that one food, ingredient or probiotic will directly change a pet’s behaviour, though it may help as part of a wider management plan.
How nutrition may support your pet’s wellbeing
Can changing your pet’s diet improve their behaviour? It may help as part of a behavioural management plan, depending on what is driving the behaviour.
Nutrition may play a supporting role in three main areas:
- Energy and overall wellbeing: Providing the right amount and balance of energy and essential nutrients helps pets feel and function at their best.
- Stress and anxiety management: Some nutrients, therapeutic diets and supplements may support normal brain, nervous-system or gut function as one part of a broader management plan.
- Cognitive health in senior pets: Certain complete formulas incorporate nutrients intended to support normal brain function as pets age.
Food alone is unlikely to resolve a behavioural concern
Behaviour is influenced by the whole picture, including your pet’s health, environment, routine, activity, previous experiences and individual temperament.
The right approach may combine appropriate nutrition with veterinary care, environmental changes, enrichment and consistent, reward-based training. Changing what is in the bowl without first understanding what is driving the behaviour may delay the support your pet actually needs.
Good nutrition isn’t just what you feed. It’s how you feed it.
What enters your pet’s bowl matters, but so do the timing, setting and way it arrives. Feeding routines can provide predictability, encourage natural behaviours, create mental stimulation and help build positive associations.
Some pets do well with a few set meals, while others may suit several smaller portions throughout the day. The right routine depends on your pet’s species, age, health and individual needs. Keep it reasonably predictable and speak with your vet if a medical condition affects how or when your pet should be fed.
Turn mealtime into enrichment
A bowl is convenient, but dinner doesn’t always have to arrive in one.
Depending on your pet’s abilities and preferences, you could try:
- Puzzle feeders or food-dispensing toys
- Slow-feeder bowls or licking mats
- Snuffle mats and scatter feeding
- Hiding small portions around the home for your pet to find
These activities can encourage sniffing, hunting, foraging and problem-solving. They can also make meals last longer for pets who tend to inhale first and taste later.
Use part or all of your pet’s regular daily food for feeding enrichment, and account for any additional treats or toppers in their overall intake. Start with something easy and introduce it gradually. The activity should be enjoyable; not so difficult that your pet becomes frustrated or can’t access enough food.
Choose options suited to your pet’s species, age, mobility and abilities, and supervise them while they learn how a new feeder or activity works.
Give every pet space to eat
In multi-pet homes, separate feeding areas can reduce competition and help every pet eat in peace. They also make it easier to monitor how much each pet consumes.
Multiple feeding stations or microchip-reading feeders may help when pets need different diets, or when one enthusiastic diner regularly volunteers to finish everyone else’s meal.
Use food to build positive associations
Food can be a valuable reward during training. Small, carefully timed rewards can reinforce behaviours you want to see again and help make unfamiliar experiences feel more positive.
Desensitisation and counterconditioning also use rewards as part of gradual plans designed to change how a pet feels about something they find frightening. These techniques need to progress at a pace the pet can comfortably manage.
If your pet experiences significant fear, anxiety or aggression, seek guidance from your vet and an appropriately qualified reward-based trainer or veterinary behaviourist rather than trying to address it with food alone.
See your vet about behaviour changes
Don’t assume that a change in behaviour is caused by food. If your pet’s behaviour changes suddenly, becomes more severe or begins affecting their quality of life, book an appointment with your vet.
Your vet can investigate the underlying cause, review your pet’s diet and medications and advise whether nutritional support should form part of the management plan. Depending on what they find, they may also recommend environmental changes, reward-based behaviour support or referral to a veterinary behaviourist.
Nutritional support for energy levels and overall wellbeing
Nutrition influences the energy your pet has available throughout the day. If they consistently consume fewer calories than their body needs, they may become less active and begin losing weight or muscle. Regularly consuming more than they need can contribute to weight gain, which may make movement harder and affect their willingness or ability to exercise.
Energy needs vary considerably between pets. Species, life stage, size, body and muscle condition, activity level, health and individual metabolism all play a part. Growing puppies and kittens and pregnant or nursing pets generally have higher demands, while older pets’ requirements can change in different ways as they age.
A change in energy or activity doesn’t automatically mean food is responsible. If your pet suddenly becomes unusually tired, restless or reluctant to move or exercise, arrange a veterinary check to investigate the cause.
How much food should I feed my pet?
The feeding guide on the pack provides a useful starting point, but it isn’t a one-size-fits-all rule. The right serving depends on factors such as your pet’s age, size, activity, body condition and health.
Different foods also provide different amounts of energy per gram, so the appropriate serving may change when you switch products. Don’t assume that the same scoop or bowl volume will provide the same number of calories.
Measure your pet’s portions and consider everything they eat throughout the day, including treats, toppers, chews and training rewards. Monitor their weight, body condition and muscle condition, and adjust their serving gradually when needed.
What’s the best food for active and sporting dogs?
For many active dogs, a complete and balanced food suited to their life stage and individual needs will provide the energy and nutrients they require when fed in the right amount. Dogs performing sustained endurance work or frequent high-intensity activity that are struggling to maintain a healthy body condition may benefit a more energy-dense working or performance dog food formula.
Nutritional support for stress and anxiety
When a stressed pet develops an unsettled stomach or loses interest in food, it may not be a coincidence. The gut and brain communicate in both directions: stress can affect digestion, while digestive health and the gut microbiome may influence levels of hormones and neurotransmitters involved in feelings of stress and anxiety.
This doesn’t necessarily mean that a changing a pet’s diet or adding a probiotic supplement will resolve anxiety, but it may be a beneficial addition to a bigger management plan.
Can nutrition help anxious dogs and cats?
Nutrition may form one part of a broader anxiety-management plan. Some veterinary therapeutic diets and supplements include nutrients or other ingredients intended to support normal brain, nervous-system or gut function or increase feelings of calm.
No single ingredient should be expected to resolve anxiety and they don't negate the importance of a complete and balanced diet. Nutrients that may be incorporated into a diet to support anxiety management include:
- Tryptophan – An essential amino acid used by the body to make serotonin, which is involved in functions including mood and sleep.
- Omega-3 fatty acids – EPA and DHA support normal brain structure and function, alongside their other roles throughout the body.
- Prebiotics and Probiotics – Prebiotics support certain gut microbes, while probiotics provide specific microorganisms. The microbiome produces important metabolites used to produce calming and happy hormones and neurotransmitters.
- B Vitamins – Support normal energy metabolism and nervous-system function.
- Alpha-casozepine – A milk-derived peptide intended to provide calming support.
- L-theanine – An amino-acid derivative that supports calm behaviour by influencing happy & calming neurotransmitter levels in the brain.
Therapeutic diets and supplements shouldn’t replace investigation of what is driving the anxiety. Fear, pain, illness, changes at home, previous experiences and unmet behavioural needs may all contribute.
Speak with your vet before introducing a therapeutic diet or supplement. They can assess your pet, recommend an appropriate nutritional option if one is indicated and build a broader plan that may include environmental changes, enrichment, reward-based behaviour modification or medication.
Nutritional support of cognitive health in senior pets
Senior pets may slow down with age, but some behaviour changes deserve more than being put down to “just getting old”.
Cognitive dysfunction syndrome is an age-related condition that can affect memory, learning, awareness and behaviour in senior dogs and cats. Signs of cognitive dysfunction include:
- Appearing disoriented or getting stuck in familiar places
- Changes to the sleep–wake cycle, including waking or vocalising at night
- Increased anxiety, restlessness or vocalisation
- Changes in activity or social interactions
- Forgetting previously learned behaviours, such as house-training or litter-box habits
Cognitive dysfunction can’t currently be cured, but recognising changes early gives your vet the opportunity to investigate other possible causes and begin an appropriate management plan.
Management may include predictable routines, environmental enrichment and adaptations, suitable physical and mental activity, medication and nutritional support. The aim is to manage signs, maintain quality of life and, where possible, slow further cognitive decline.
Can nutrition support cognitive function in senior pets?
Nutrition may form one part of a cognitive-dysfunction management plan. Some therapeutic diets use carefully formulated combinations of nutrients that may include:
- Medium-chain triglycerides: Can provide an alternative energy source for the ageing brain and have been studied particularly in dogs with cognitive dysfunction.
- Omega-3 fatty acids: DHA and EPA support normal brain structure and function.
- Antioxidants, B vitamins and other nutrients: Support normal brain, nervous-system and metabolic function as part of the complete formula.
These nutrients are generally used together within a purpose-formulated diet rather than as isolated solutions. Adding individual supplements doesn’t necessarily provide the same benefit and may be inappropriate for some pets.
These nutrients are usually incorporated as part of a complete formula rather than used in isolation. If you suspect your pet may have cognitive dysfunction, speak to your vet about diet and other strategies that can help support their cognitive health.
The whole picture behind that feed good feeling
Nutrition can support your pet’s energy, brain health and overall wellbeing, but it isn’t a shortcut to changing behaviour. Nutrition, enrichment, environment, routine, reward-based training and veterinary care all have a place in the bigger behaviour and wellbeing picture.
When it comes to nutrition and behaviour, no single food format, ingredient or front-of-pack claim provides the whole answer. What matters most is that your pet is eating a complete and balanced diet that meets their life stage and health needs, so they can enjoy that feed good feeling.
Explore complete and balanced dog and cat food at Petbarn, in store or online.
Frequently asked questions about nutrition and behaviour
About the Author
Rebecca Daly BVScVeterinarian & Content Writer
After graduating with a Bachelor of Veterinary Science from the University of Queensland in 2017, Rebecca spent two years working as an equine veterinarian in New Zealand. Upon returning to Australia, she completed a Bachelor of Communications from UQ in 2023. Rebecca is passionate about educating pet parents so they can provide the best lives for their pets. She is the pet parent of a cat named Edith, a domestic short hair adopted from a Petbarn Adoption Centre.
