- Home
- Dog Conditions
- Increased Appetite in Dogs
Increased Appetite in Dogs
Written By hannah hollinger
Published: 12/06/2015Updated: 04/21/2021
Veterinary reviewed by Dr. Linda Simon, MVB MRCVS
What is Increased Appetite?
Hunger and the feeling of being full after eating (satiety) are controlled by the central nervous system. Abnormalities in the CNS can cause increased appetite, as can several other factors such as stress, an underlying disease, or cancer. Because appetite changes are so common in many illnesses and situations, diagnosing the reason for it can be a complex process. Polyphagia can indicate serious disease. Any alteration in your pet’s eating behavior should be checked by the veterinarian.
Increased appetite is known as polyphagia in veterinary terms. If your dog seems to be continuously hungry and his behavior dictates that he requires food in excess of the norm, further investigation is warranted. This is especially true if the appetite has recently increased. A visit to the veterinarian is needed in order to diagnose an underlying cause, and to determine how the insatiable appetite is affecting his weight (another important marker of canine health).
Increased Appetite Average Cost
From 121 quotes ranging from $500 - $3,000
Average Cost
$1,600
Get a free pet insurance quote in less than 60 seconds!
Easily compare quotes from the most trusted pet insurance companies in the United States.
Symptoms of Increased Appetite in Dogs
Prompt action in dealing with an increased appetite is conducive to determining the exact cause. Polyphagia complications can range in severity. The following symptoms can indicate that your dog must be seen by the veterinarian without delay.
- Weight changes can include both loss or gain
- Excessive thirst
- Frequent urination
- Exhibiting behavior indicating constant hunger
- Lethargy
- Abdominal bloating
If the polyphagia is due to an underlying disease, you may see symptoms such as those listed below. Symptoms will vary depending on the cause:
- Depression
- Neurological signs can include pacing, circling, blindness
- Lethargy
- Muscle weakness
- Panting
- Soft stool or diarrhea
- Trembling
- Vomiting or regurgitation
- Increased thirst
Types
Polyphagia can be classified as follows.
- Primary
- Caused by destruction of the satiety center, for example, trauma. This is rare.
- There will likely be additional neurological signs of a CNS disease
- Secondary
- More common than primary polyphagia
- Diseases, parasites and the improper diet can result in secondary polyphagia
- Drug Induced
- Corticosteroids and anti seizure medicine, for example, can increase food intake
Causes of Increased Appetite in Dogs
If your canine companion is showing signs of constant hunger, the situation can be worrisome, and can often lead to very unfavorable behavior on the part of your dog (such as begging). In order to return your pet to his normal state of well-being, you will want to take him to the veterinarian without delay. Causes for the increased appetite are great in number. Some are listed below.
- A lesion in the central nervous system
- Hypoglycemia
- Low-calorie or unbalanced diet
- Overfeeding
- Learned behavior of begging for food
- Stress can cause your dog to increase eating habits
- Infection
- Continual living in a low environmental temperature
- Pregnancy or lactation
- Increased exercise
- An endocrine or hormone related disease like diabetes mellitus or hyperadrenocorticism
- Malabsorption or maldigestion of food due to illness or parasites
- Pancreatic atrophy
- Increased rate of gastric emptying
- Cancer
- Medications like thyroid supplements, corticosteroids sedatives or anticonvulsants
Diagnosis of Increased Appetite in Dogs
The veterinarian will, under most normal circumstances, begin with a physical examination while discussing your observations and concerns. Possible findings may include muscle wasting, alopecia (hair loss), ataxia (loss of control of bodily movements), and abdominal or hepatic enlargement.
Laboratory tests can be great indicators of why your dog seems to have an insatiable appetite. The tests can reveal various results.
- Complete Blood Count
- Presence of anemia will be evaluated through red blood cell count
- An increase in white blood cells could point to intestinal parasitism or hyperadrenocorticism (Cushing’s Disease)
- Serum Biochemical Profile
- Changes to glucose, proteins and enzymes may be discovered
- Increase in alkaline phosphatase can mean Cushing’s Disease, recent corticosteroid administration or diabetes mellitus
- Urinalysis
- We will check for blood, protein and glucose
- Poorly concentrated urine can occur in e.g. diabetes and Cushing's Disease
- Fecal Flotation
- This procedure is done to check for parasites
Additional diagnostic imaging might be needed, in the form of a radiograph, ultrasound, endoscopy, CT scan or MRI scan.
Treatment of Increased Appetite in Dogs
The treatment protocol for your canine family member will vary depending on the underlying cause of the polyphagia. The veterinarian has the knowledge to help you deal with any sort of at home therapy required for successful resolution of the appetite changes.
For example, a drug-induced increase in appetite may be indeed temporary, and will wane with time, even with the continued use of the prescribed medication.
In the instance of an apparent insatiable appetite caused by stress or learned behavior, you will receive direct advice and best practices on how to deal with the problem. The veterinary caregiver may suggest behavioral therapy for a habitual eater. A dog suffering from a stress-induced neverending desire to eat may benefit from the simple removal or reduction of the stressor. No doubt, the veterinarian will ask you to feed your dog only as per the caloric requirements to maintain the good health of your pet. Don’t be discouraged; behavioral issues take time to resolve. Patience and kindness are the best remedies.
If there is a serious underlying disease, of course, it must be dealt with and in turn, the appetite problem should also resolve. For example, diabetes mellitus will require insulin injections and dietary adjustments. A parasitic infestation will be eradicated with medication. Diseases like cancer may involve treatment in the form of surgery, radiation or chemotherapy, and perhaps all three.
Worried about the cost of treating your pet's symptoms?
Pet Insurance covers the cost of many common pet health conditions. Prepare for the unexpected by getting a quote from top pet insurance providers.
Recovery of Increased Appetite in Dogs
The prognosis, by all means, is dependent on the cause of the polyphagia. Continual communication with the veterinary caregiver will be part of the home care and management. The veterinarian will advise on the need for repeat blood tests, imaging follow-up and dietary advice. Return visits to the clinic will depend upon the initial cause of the polyphagia. As always, working together with the veterinary specialist is best for the continued comfort and welfare of your dog.
Increased Appetite Average Cost
From 121 quotes ranging from $500 - $3,000
Average Cost
$1,600
Top
Increased Appetite Questions and Advice from Veterinary Professionals
Maltese
Dino
6 Years
0 found this helpful
0 found this helpful
My pet has the following symptoms:
Weakness
Polydipsia
Distended Belly
Polyphagia
Pea Shape Bump
My dog maltese is 6 years old. Hes always been skinny And picky when it comes to food, but we didn't change his dog food. 2 months ago we noticed the increase in appetite. He's extremely hungry and thirsty to the point where his belly is noticeably distended. From then on we control his intake and walk him a lot outdoors. But this didn't change anything. He looks very unhealthy. He looks frail. And we also notice a black pea shape on his left shoulder. I dont know if this is significant. Could this be a tick burrowed under his skin and caused polyphagia and polydipsia? Or is he diabetic? I hope it's nothing major
Aug. 30, 2017
0 Recommendations
Without examining Dino I cannot say whether or not this is serious but there are many conditions which may be attributable to these symptoms including hormonal conditions (like Cushing’s Disease), poisoning (chronic), food issues among others; the pea shaped lump may be a cyst or something more serious which would need to be checked by your Veterinarian. With the symptoms that Dino is showing, it would be best to have a check up as tests would be inevitable (blood tests) in order to determine a diagnosis. Regards Dr Callum Turner DVM
Aug. 30, 2017
Was this question and answer helpful?
Pug
Frankenstein
10 Years
0 found this helpful
0 found this helpful
My pet has the following symptoms:
Wakes Up In Middle Of The Night To Eat
Frankenstein is a 10 year old 19 lb pug. I switched her food to an adult food over a year ago and she's always had a 1/2 cup in the morning and 1/2 cup at night, no problems. For the past week she's woken me up at 4:30 and 5:30 am (she typically sleeps throughout the night) and the only thing she wanted was her food. I tried feeding her a little later, tried giving her a treat before bed, etc. I read on the food label she should have 1 1/4 cup/day so I could try feeding her more, I'm just worried about her gaining weight (the vet said to try to get a lb or two off at her age). She doesn't act this way during the day, only at night.
July 26, 2017
0 Recommendations
Up until a year ago, were you feeding Frankenstein a puppy diet before switching to an adult diet? Puppy diets are more nutritious than adult diets and Frankenstein may have been used to a certain level of dietary intake all these years and has been cut off essentially. If Frankenstein needs to lose weight, at 19lb she is just one pound above the recommended range of 14-18lb, it may be worth moving her over to a weight loss diet which may keep her full for longer and will be ‘less fattening’ overall. Regards Dr Callum Turner DVM
July 26, 2017
Was this question and answer helpful?
Black Labrador
Duke
7 Years
0 found this helpful
0 found this helpful
My pet has the following symptoms:
Excessive Drooling
Constant Hunger
Behavior Changes
Duke has never acted like a typical lab. He's never shown interest in food lying around, he never gets in the trash, is a picky water and typically won't eat anything without being told to do so. Recently, he has started acting like he's constantly starving. He has even gotten food of the kitchen table. 1.) He's never done that 2.) It was donuts. He's never eaten sweets even if he was given them. He's picky. Also, he's been drooling a lot out of nowhere. Drool just hangs from his mouth regularly. He also has a small bump (about the size of a grape) on his side, near his ribs. It doesn't seem sore, it's not red and hasn't gotten any bigger. I am so confused by what could be going on with him. His behavior is so off from his norm. And I'm terrified of knowing because he's 7 :( Any idea what I should be preparing myself and my young daughters for?
July 26, 2017
0 Recommendations
Behavioural changes and increased appetite may be attributable to many different conditions; I would however get the lump on his side looked at as it may be something benign like a lipoma or something more serious, a fine needle aspirate would be useful. Increased appetite may be due to parasites or a hormonal condition; a physical exam and blood tests would tell your Veterinarian a lot. I cannot say if you need to prepare yourself as there may be treatment or medical management available. Regards Dr Callum Turner DVM
July 26, 2017
Was this question and answer helpful?
Great dane
Baltazar
2 Years
0 found this helpful
0 found this helpful
My pet has the following symptoms:
Massive Weight Loss
Extreme Hunger
Inflamation Showing On Lab Work
Partial Seizures/Fly Snapping Syndrome/Hallucinating
Slow To Jump Or Lie Down On And Off As If In Pain
Grumpy More Often
My boy suddenly loss 10lbs in 2 weeks and has lost another 5 lbs last week (15lbs in 3 weeks) he is now losing muscle mass and is basically skin and bones now. Starving constantly and having fly snapping syndrome which went from once in a while to almost daily in last week and and half. Vet ran cbc and thyroid. And only thing that came back was EOS was elevated...he tried prednisone for the inflammation and treated for worms even though none showed on test....no change...just started phenobarbital and still had two seizures in which he becomes more agitated each time. I'm feeding him the kcal needed for a 120 lbs great dane and he is only 95lbs now...plus miracle vet weight supplement.....have given rice to add carbs too....vet is at a loss he is dying in front of me.....maybe CNS disorder? Tumor? I don't know.
He is almost 3 yrs old and a rottweiler/great dane cross.
July 26, 2017
0 Recommendations
Generally a dramatic weight loss like this may be attributable to liver disease, kidney failure, thyroid disorders, cancer, pancreatitis etc… It seems that your Veterinarian has tested comprehensively for possible causes; unfortunately I am unable to add anything further, it may be worth visiting a Specialist to have a look at Balthazar. Regards Dr Callum Turner DVM
July 26, 2017
Was this question and answer helpful?
Golden Retriever
Oakley
6 Years
0 found this helpful
0 found this helpful
My pet has the following symptoms:
Increased Appetite
Growth
My golden retriever is 6 years old and has recently been showing signs of increased appetite despite eating the same food for years, and no change in daily exercise. In fact, he used to never seem as interested in his food as most dogs I know so him scarfing his food down recently is an apparent change to his normal behavior. We feed him a little over a cup of food twice a day and he has been having regular bowl movements. I have noticed that he has began scavenge around the house and eat crumbs more than he used to ( he never really paid much attention to food on the floor unless it was in the kitchen while we were cooking).
Although I am not sure if this is certainly related or not, I also noticed that he has a growth forming on his chest that I am currently monitoring as he has had a malignant tumor about 4 years ago, but on his leg only and it was surgically removed. Could an increased appetite be a sign for that growth to be more serious and do I need to have him checked out sooner rather later because of these two problems?
July 26, 2017
0 Recommendations
Any type of mass forming can cause an increase in appetite as cancerous cells grow fast as can take a lot of nutrition away from the rest of the body; regardless, any mass should be checked out as soon as possible by your Veterinarian. A general increase in appetite may be caused by parasites, other infections, hormonal conditions, malabsorption disorders etc… It would be best to have Oakley checked over and possibly a fine needle aspirate done to determine the type of mass forming (it could be as innocent as a lipoma). Regards Dr Callum Turner DVM
July 26, 2017
Was this question and answer helpful?
Increased Appetite Average Cost
From 121 quotes ranging from $500 - $3,000
Average Cost
$1,600
Get a free pet insurance quote in less than 60 seconds!
Easily compare quotes from the most trusted pet insurance companies in the United States.
