You know your dog better than anyone: the happy dance when you pick up the leash, their favorite sofa spot, the head tilt when you talk. So when that spark fades, you notice right away.
Maybe your dog still eats and goes outside, but seems quieter and less interested. Dogs do not experience low mood in exactly the same way people do, and no one can know for sure what a dog feels inside. What we can do is watch for changes in behavior: withdrawal, lost interest in favorite activities, or far more sleep than usual. Those changes may reflect sadness, stress, boredom, or grief — but they can also be early signs of pain or illness. So the first step is always the same: notice the change, look for a possible cause, and talk to your vet if you are worried.
1. Less Interest in Play and Walks
A dog who used to race to the door at the word “walk” now stays lying down. A dog who loved fetch watches the ball roll past. A quiet day or two is normal, and older dogs naturally slow down. What matters is a lasting change. If your dog has lost interest in play for more than a few days, with no clear reason, take note. Try a short, easy game — a gentle tug, a slow sniffy walk, or a puzzle feeder — rather than a long, energetic outing. If they refuse even favorite activities again and again, mention it to your vet.
2. Changes in Appetite
Food matters a lot to most dogs, so a change in appetite stands out. Some dogs eat less or turn away from treats they normally love. Others eat more or beg constantly. A smaller appetite can follow stress, a routine change, grief, or a new food brand. It can also signal dental pain, nausea, or another health problem, so a sudden or lasting change should not be ignored. Keep mealtimes calm and regular, and avoid hovering anxiously over the bowl. If your dog refuses food for more than a day, or eats much less than usual for several days, contact your vet promptly.
3. Sleeping Much More Than Usual
Adult dogs typically sleep 12 to 14 hours a day, and puppies and senior dogs sleep even more, so extra sleep alone is not alarming. What matters is a change from your dog’s own normal pattern. A dog who used to play after breakfast but now sleeps until lunchtime may be bored, feeling low, in pain, or unwell. Keep a simple note for a few days about roughly how long your dog sleeps and when — that is far more useful to your vet than “he sleeps a lot.” Also make sure your dog has a warm, quiet place to rest.
4. Withdrawing and Hiding Away
Some dogs cope with feeling low by pulling back. Instead of following you around the house, they choose a quiet corner or spend long periods alone in another room. They may avoid eye contact or leave when guests arrive. Withdrawal can follow a big change: moving house, a new baby, a new pet, a family member leaving, or the loss of a companion animal. Do not force your dog out of their safe space. Visit calmly for short, gentle interactions — a quiet word, a slow stroke, a treat placed nearby. Most dogs come out on their own as they feel safe. If withdrawal is sudden or extreme, or paired with not eating or limping, a vet check is the right step to rule out pain.
5. Clinginess and Following You Everywhere
Other dogs become extra clingy when unsettled. A dog who once napped happily alone may now shadow your every step, whine when you leave the room, or panic when you pick up your keys. This can look like affection, and in part it is, but a sudden increase in clinginess can also signal anxiety. Separation-related behavior often appears after a routine change, such as returning to office work after a holiday. Build up alone time very gradually, starting with a few minutes behind a closed door, and leave a safe chew or food puzzle for your dog to enjoy. For a fuller step-by-step approach, see our guide on how to teach a dog to stay home alone without anxiety. If clinginess comes with destructive behavior or toilet accidents, talk to your vet.
6. Less Interest in People and Other Dogs
A social dog who suddenly avoids people or other dogs is giving you an important clue. They may hang back at the dog park, ignore visitors, or growl at another dog when they used to be friendly. This does not mean your dog has become “bad.” Pain is a common hidden cause: sore joints, an ear infection, or a painful tooth can make being touched or jostled hurt. Fear after a frightening experience can have the same effect. Do not force social time. Let your dog choose whether to approach, and keep greetings short and calm. If the change is sudden or your dog seems in pain, a vet visit should come first.
7. Changes in Grooming and Self-Care
You may notice changes in grooming: less interest in being brushed, or the opposite — licking or chewing their paws, flanks, or tail excessively, sometimes until the skin becomes sore. Excessive licking can be a self-soothing behavior linked to stress or boredom, but it can also be caused by allergies, skin irritation, or pain in that area. That is one more reason a vet check matters before assuming the cause is emotional. Keep grooming gentle and positive, with short sessions, praise, and a treat at the end. If your dog licks one spot repeatedly, note when it happens — after walks, when left alone, or at night — as that pattern can help your vet.
8. Toilet Accidents and Restlessness at Night
A previously house-trained dog who starts having accidents indoors, or who paces and whines at night, may be distressed. Anxiety, a routine change, needing to go out more often, age-related changes, or a urinary problem can all be possible causes. Punishing a dog for an accident only adds stress and makes things worse. Stay calm, clean up without a fuss, and look for a pattern: does it happen only when you are out, only at night, or after a particular event? Give your dog a late-evening toilet break and a comfortable sleeping area. If accidents are new, frequent, or paired with straining or blood in the urine, contact your vet without delay.
9. A Flat Expression and Low Energy
Owners often describe a low dog as looking “sad”: ears held back, tail low, slow movements, and less bounce. Body language can be easy to misread, though — the same posture can mean pain, fear, tiredness, or simply a calm mood. Look at the whole picture instead. Is your dog moving more slowly overall? Are they less responsive to their name, toys, and food? Have several changes appeared at the same time? A combination — for example, less play, more sleep, and less appetite together — is more meaningful than any single sign alone. A short daily diary noting appetite, sleep, play, and mood can help you spot patterns and gives your vet clear information.
10. Possible Causes: What Might Be Behind the Change?
Understanding a possible trigger can help you support your dog, but remember you are looking for clues, not making a diagnosis. Common factors include grief and loss, big life changes such as moving house or a new baby, boredom and lack of stimulation, too little exercise, and seasonal changes with shorter days and fewer walks. The most important possibility to rule out first is pain or illness: arthritis, dental disease, infections, and digestive problems can look exactly like low mood. If the change began right after a particular event, share that with your vet along with your diary notes.
How to Help Your Dog Feel Better
Small, steady changes often help more than one big overhaul, and patience matters — most dogs do not bounce back overnight. Keep a steady routine: feed, walk, and play at roughly the same times each day, because predictability comforts a worried dog. Add gentle exercise and enrichment: a sniffy walk, puzzle feeders, and short training games. Spend calm, quality time together rather than overwhelming a withdrawn dog with loud games. Encourage, do not force, and celebrate small wins like a tail wag or a short walk.
What NOT to Do
Some well-meaning responses can make things worse. Do not punish withdrawn behavior: a dog who has an accident, refuses to play, or hides is not being spiteful, and punishment adds fear and damages trust. Do not force socializing or drag a withdrawn dog to a busy dog park. Do not assume it is “just old age” or “just a phase” — a sudden change still deserves attention. Do not start medication or supplements on your own, as they can be unsafe or interact with other conditions; only use them if your vet recommends them. Do not make many big changes at once, and do not ignore sudden or severe changes such as stopping eating entirely or seeming in clear distress. Finally, do not compare your dog to other dogs: judge them against their own normal behavior.
When to See a Vet
A vet check is not an overreaction — it is the responsible first step when behavior changes noticeably. Book an appointment promptly if you notice loss of appetite lasting more than a day, sleeping far more than usual, stiffness or limping, vomiting or diarrhea, sudden withdrawal or aggression, excessive licking that causes sores, toilet accidents in a house-trained dog, any change lasting more than two weeks, or any sign of pain such as whimpering or flinching when touched. Bring your diary notes, and mention when the change started and whether anything in your dog’s life changed around that time. Your vet will likely examine your dog and may suggest tests to rule out medical causes, or discuss behavior support if none is found. For planning regular check-ups, see how often you should take your dog to the vet by age. If behavior changed after a move or new arrival, our guide on how to introduce a rescue dog to your home in the first week may also help rebuild routine and safety.
Frequently Asked Questions
Can dogs really get depressed?
Dogs can show changes that look like low mood in people — less play, less appetite, more sleep, and withdrawal. Experts believe dogs feel grief, stress, and anxiety, but not depression in exactly the same way humans do. Think of it as a behavior change that deserves attention, not a diagnosis to make at home, and always have a vet rule out pain or illness first.
How long does low mood in dogs usually last?
It depends on the cause. A dog unsettled by a short-term change may bounce back within a few days once life returns to normal. Grief or a major life change can take weeks or months, with gradual improvement. If there is no improvement after two weeks, or things are getting worse, talk to your vet.
Should I get another dog to cheer mine up?
Not necessarily. A new dog can be a wonderful companion, but it can also add stress, especially if introductions are rushed. Help your current dog feel more settled first, and think carefully — with your vet’s input if needed — before adding a new pet.
Will more walks fix my dog’s low mood?
Exercise and enrichment usually help, but they are not a cure alone. Gentle walks, play, and mental stimulation support a low dog, but if the cause is pain, illness, grief, or anxiety, exercise alone will not solve it. Think of walks as one part of a bigger picture that includes routine, rest, companionship, and a vet check.
When should I worry about my dog sleeping all day?
Compare it with your dog’s normal pattern. Puppies and senior dogs naturally sleep a lot, and all dogs sleep more on quiet or hot days. Worry more if the extra sleep is a clear change, lasts more than a few days, or comes with other changes such as loss of appetite. In that case, a vet visit is the right step.
A Final Word: You Are Already Helping by Noticing
If you have read this far, you are already doing the most important thing: paying attention to your dog. Dogs cannot tell us in words when they feel low, so they tell us through small changes in eating, sleeping, play, and seeking us out. Noticing those changes early, staying patient, keeping life steady, and getting a vet check when unsure — that is what good dog ownership looks like. Your dog does not need you to be perfect, just present, calm, and consistent. If you are worried right now, call your vet, share what you have noticed, and take it one calm day at a time.