What this means
A confused or dazed dog looks as if it does not understand where it is: it stares at one spot, stops in the middle of a room, stands at the hinge side of a door, does not recognise familiar people or places, wanders without purpose or reacts more slowly than usual. Sometimes it simply seems switched off and answers to its name sluggishly.
This is a change in behaviour, but it is seldom only a behaviour matter. A sudden or new confusion is a reason to see a vet, especially if the dog used to be alert and found its way around well. Low blood sugar, a disease of the nervous system, pain, poisoning or the effect of a medicine may lie behind it. A vet needs to find the cause rather than guess at home.
It helps to note when it began, how long an episode lasts and whether anything set it off, for example a long time without food, hard exercise or a new medicine. If you can, film an episode on your phone: that is more useful to a vet than a description. Also say whether your dog still sees and hears as it used to, because poor sight or hearing can look like confusion too.
Possible causes
These are things that can cause this sign. It is not a diagnosis, and they are not equally likely for your dog.
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Low blood sugar
When the brain does not get enough sugar, a dog may become dazed, wobbly or seem distracted. It is seen more in small puppies and in dogs that went long without food or exercised hard.
About the condition: Hypoglycemia (low blood sugar) -
Sensitivity to certain medicines
Because of an inherited gene change, some dogs react unusually strongly to certain medicines and may become dull or confused. Tell your vet about every medicine your dog is given.
About the condition: MDR1 gene mutation (multidrug sensitivity) -
An inherited disease of brain cells
Some inherited diseases slowly damage brain cells. The dog gradually forgets its habits and becomes confused, restless or fearful.
About the condition: Neuronal ceroid lipofuscinosis -
Pain or general illness
A dog in pain or unwell may seem withdrawn, unresponsive or distracted. Pain is not always visible.
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Changes of old age
As they age, some dogs begin to wander, become unsettled at night or forget familiar things. Even if it resembles ageing, a vet should check that there is no other recognisable cause.
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Poisons and harmful substances
Some toxic substances affect the nervous system and can cause dazed behaviour or an unsteady walk. Say so if your dog could have swallowed something.
About the condition: Poisoning
What else to watch for
These observations help your vet build the picture faster. Note down what you saw and when.
- When it began and whether the change came suddenly or gradually
- How long an episode lasts and whether it repeats at a certain time of day
- Whether your dog recognises familiar people, places and its own name
- Whether it bumps into things or cannot find the door or bowl
- Whether sleep, appetite, thirst or urination have changed
- Whether your dog recently went long without food, exercised hard or was given a new medicine
When to book a routine visit
If your dog has become confused or dazed and it does not pass, book a vet visit. Bring a video of an episode and say when you noticed the change, what medicines your dog is given and when it last ate.
Related conditions
Conditions whose entries mention this sign. The list is somewhere to read on, not a way to reach a diagnosis.
- Hypoglycemia (low blood sugar) Hormones and metabolism Hypoglycemia is a condition in which the level of glucose in the blood drops too low and the brain and muscles run short of energy. It can affect young puppies and small dogs, especially if they have gone a long time without food or are exhausted, as well as dogs with certain diseases. Hypoglycemia can quickly become life-threatening, so the dog needs a vet immediately.
- MDR1 gene mutation (multidrug sensitivity) General health This is an inherited change in a gene that makes some dogs unusually sensitive to certain drugs. That is why a vet should know that a dog has, or may have, this mutation before any medicine is used. A genetic test can show whether a dog carries it.
- Neuronal ceroid lipofuscinosis Nerves and muscles This is a group of inherited diseases in which cells cannot break down certain waste substances, so these build up in the nerve cells of the brain and eyes and gradually damage them. The disease is progressive, so over time changes in the dog's behaviour, sight and movement become more marked. Genetic tests exist for some of its forms.
- Poisoning General health Poisoning happens when a dog swallows, breathes in or absorbs through its skin a substance that harms its body. Much of what is found in a home and garden is dangerous to a dog: rodent bait, antifreeze, chocolate, grapes and raisins, the sweetener xylitol, preparations meant for people. Even if the dog seems well, it needs a vet immediately.
Body systems: Hormones and metabolism General health Nerves and muscles