Why Does My Dog Have Diarrhea ?
Why Does My Cat Have Diarrhea ?
(If your pet is a ferret)
Google sometimes defaults to this page for pancreatitis. For that, you want to go here.
If parasites might be your pet's problem, and your pet is a dog, go here
If it is a cat, go here...................
|Do not give reformulated kaopectate to cats. Use a product that contains Only kaolin and pectin as active ingredients|
Ron Hines DVM PhD
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This article explains how I go about discovering the cause of diarrhea in you pet and some of the ways I treat it. Not every cause of diarrhea or medication is covered - but the most important ones are.
Why Is This Happening?
Anything that inflames or irritates the lining of your pet's intestine will cause diarrhea. When your pet's body senses that something is in its intestine that shouldn't be there, it try's to get it out as rapidly as possible. If it is high in your pet's digestive tract it will vomit. If it is lower in the tract it will come out as diarrhea.
How A Veterinarian Finds The Cause Of The Problem:
I am always delighted when a client actually brings me a sample of the mess that their pet made. In more than half the cases, the diagnosis can be made from a fecal specimen and history alone. Try to bring in a fresh specimen – no need for more than a few tablespoons full.
Because my patients can’t talk, the history that you provide is extremely important. The first question I will ask you is whether this is a sudden acute problem or if it is chronic and has been going on quite a while. The next thing I will ask is if you fed something unusual to the pet or if torn remnants of some household object are strewn about the house.
Is This A High Intestinal Problem Or A Low Intestinal Problem ?
First we need to get a general idea as to what part of your pet's intestine is inflamed. Cases of diarrhea fall into two groups in approximately equal numbers. In the first group, the problem is in the small intestine and in the second group in the large intestine, cecum or rectum. High diarrheas tend to be the most dangerous. Sometimes, the problem is a combination of both types.
When the problem is high in the small intestine your pet will eliminate large amounts of stool, but the frequency of its bowl movements is not increased. If there is blood in this stool, it will be chocolate-colored, not bright red. There won't be much straining when the pet defecates. The stool in cases of high diarrhea is not thick, sticky or mucoid. Vomiting may accompany high small intestinal problems.The pet may also have a tummy ache.
The second group of pets have a problem in their large intestine. These pets have frequent, uncomfortable eliminations. When they go, the amount of stool is small and often covered with mucus. They take a long time to poop and try several times. If the colon is inflamed enough, the stool may be coated with flecks of bright red or rust-colored blood. Pets that have eaten bones, sharp or gritty objects often have a mixture of diarrhea and constipation. The material passed is a combination of hard lumps and soft or watery stool. These pets may need laxatives or enemas to clean their system out.
Is This A Primary or Secondary Problem ?
Sometimes the underlying problem is located in the intestine. But sometimes, their is a problem somewhere else in your pet's body that is the root cause.
Along with history, the veterinarian's physical exam and laboratory tests help determine this. In most cases, there are very few abnormal blood work results when the problems is in the intestine itself. In these cases, abnormal physical exam findings are all limited to an inflamed, thicken and painful intestine. With primary intestinal problems I can often feel enlarged lymph nodes that collect lymph from the intestines.
Diarrhea also occurs secondary to problems in other organs of your pet's body. When I am fortunate, blood work panels and a careful physical examination will identify this disease. The Uremia of kidney failure is a common cause of diarrhea in pet. So is liver disease (hepatitis). Addison's Disease, affecting the pet's adrenal gland, as well as an over-active thyroid or hyperthyroidism or medications to treat these and other conditions can also cause diarrhea in your pet. A sudden inflammation of the pancreas or pancreatitis also will cause diarrhea in dogs and cats.
This is the most serious complication of severe diarrhea. Severe diarrhea is most serious in very young, very old and very small pets. They can become severely dehydrated very quickly. Dehydration in small pets and frail elderly animals can be fatal because their surface area is large in proportion to their body weight. As dehydration progresses these pets have trouble maintaining their body temperature and may lapse into coma. Only the rapid infusion of intravenous fluid will save them.
When the problem is minor, giving fluids such as Pedialyte is sufficient. When the dehydration is severe, the pet needs to be hospitalize and the fluids given by intravenous drip.
The body temperature of your dog or cat should be about 101.5 F (38.6C). In some cases of severe diarrhea and dehydration, their temperature will drop below 100 F (37.8C). These pets need to be warmed. In fewer cases, their body temperature will go above 102. 6. F (39 C). These pets need to be cooled - or they need to receive medications to lower their body temperature.
What Complications Might Occur?
Intestinal inflammation in young pets with diarrhea occasionally causes the intestines to thrash about so vigorously that the intestines tie themselves in knots (volvulus) or fold in upon themselves (intussusception). Both these conditions can be life threatening.
What General, Non-Specific Treatment Are Available To Me At Home When This Is A Minor Problem?
Diarrheas in dogs caused by eating the wrong foods or transient stress often improve if you withhold food for 24 hours and give the pet kaopectate 0.5-1.0 ml/pound every four hours.
Some brands of kaopectate were reformulated to contain bismuth subsalicylate in addition to the old ingredients which were attapulgite and alumina clay. Dogs can handle this compound well, but if too large a dose is given to cats it can be toxic.
loperamide (0.2mg/ml Imodium, Equate Liquid WalMart) at 1ml per four pounds two or three times a day or in tablet form at 0.05-0.1 mg/pound every 8 hours). DO NOT EVER GIVE IMODIUM TO CATS!
If you give give your dog too much Imodium, you will make him constipated.
Serious cases of diarrhea begin exactly the same as non-serrious cases of diarrhea and only your veterinarian is qualified to tell one from the other.
Diarrhea that contain blood, persists more than 24 hours or affect your pet's general activity and perkiness needs the immediate attention of a veterinarian. So does diarrhea that rapidly dehydrates your pet. When you visit your veterinarian, be sure to bring along several tablespoons full of the pet's stool in a sealed baggie. I know this is an unpleasant task. But I often find the cause of the problem right away by passing the stool through a sieve or examining it under a microscope. You veterinarian may be able to obtain a stool specimen directly from your pet but it might not be enough for all the examinations that should be done. Wash your hands well - because some of the infectious causes of diarrhea can affect you too.
Checking The Stool Specimen:
This is the fun part about being a veterinarian – poking through poop. Depending on the history you give about your pet's life style, I often pass the material through a strainer to hunt for objects such as leaves, sticks, glass, or aluminum foil that are the source of the problem. I have found every imaginable thing.
Then I prepare slides of the material to examine under my microscope. Some of these cases show a normal digestive process where food is being digested and absorbed. In others, fat globules are present and protein particles are sharp – evidence of poor digestion. These cases are either maldigestion or malabsorption. They can be due to a hyper-motile intestine or the lack of normal liver and pancreatic enzymes. Some stool is abnormally light in color due to a lack of these enzymes. This is a hint of liver, pancreatic or gall bladder disease. Many times, I find things like bug parts that allow me to diagnose the problem without further tests. Other times common intestinal parasites or their eggs are visible under the microscope.
What Are Some Common Causes Of Diarrhea?
Diarrhea Caused By Pet Care:
That Don’t Agree With Pet
It is amazing the things pets will eat ! Many of these cases are actually separation anxiety cases where a panicky pet eats everything in sight . Placing these pets on a large dose of petrolatum-based cat laxative may help slide this material out with the stool. These pets need to be monitored carefully for seventy-two hours to be sure the intestine does not block. And they need to be confined in an area that can be easily cleaned up. I sometimes feed them art glitter and wait for it to come out the other end. At the first sign of abdominal distress, depression, general weakness, fever or blood in vomitus or stool, they should be rushed to a veterinarian for further testing. They also need immediate veterinary care if you suspect that they ate something dangerous or sharp.
Diarrhea Caused By Medications And Chemicals:
Drugs From The Pharmacy
Diarrhea Caused By Parasites :
Hookworms, roundworms, whipworms and strongyloides are some of the nematode parasites that cause diarrhea in dogs and cats. These organisms are the most common causes of diarrhea in puppies and kittens. They are also threat to children who are accidentally exposed to your pet's stool. You can read about these parasites and how I deal with them in other articles on my web site. If their are enough parasites to cause diarrhea, their eggs are usually seen when the stool is examined with a microscope.
Some protozoal parasites are single-celled microscopic parasites of the intestine. Diarrhea is their primary sign. This group includes coccidia and giardia. We treat them with bland diets, sulfonamides and metronidazole. Giardia can cause similar problems in pet owners – particularly children.
When diarrhea persists in your cat, despite giving worming medications, metronidazole and probiotics, the cat should be examined for Tritrichomonas foetus . This is particularly so if the cat was obtained from a shelter, group home, cattery or if what was thought to be a giardia or coccidiosis problem fails to respond to the usual medications. You can read more about Tritrichomonas in cats here. Diagnosing this problem requires a specific test (PCR, or InPouch tests) and a specific medication (ronidazole). You can read more about those procedures here.
Diarrhea Caused By Viral Infections:
Diarrhea Caused By Bacterial Infections:
Food – Food Poisoning
And Campylobacter In Dogs And Cats
Diarrhea In Cats Caused By Bartonella:
An organism call Bartonella has been implicated in chronic gastrointestinal infections in cats and occasionally dogs. Until recently, Bartonella was primarily associated with Cat Scratch Fever. The diagnosis of Bartonella infection is made using a laboratory tests . When cats or dogs are positive for this organism it can be successfully treated using azithromycin, doxycycline or rifampin.
Gastroenteritis of Ferrets
Poorly Understood Causes (Idiopathic):\
Inflammatory Bowel Disease (IBD)
eDogs and cats sometimes develop intestinal inflammations, diarrhea and vomitting for causes that are not always clear. For more information on Inflammatory Bowel Disease in your dog, go here. For more information on Inflammatory Bowel Disease in your cat, go here.
Gastroenteritis Of Dogs
Eosinophilic Enteritis Of Cats
This is sometimes consdiered a type of eosinophilic complex of cats. It shares a lot of characteristics with inflammatory bowel disease of cats (IBD). Read more about IBD of cats here .The signs are diarrhea, weight loss and vomiting. We suspect the problem is a food allergy. Cats with this problem often have elevated numbers of white blood cells called eosinophils. These cells are associated with allergic conditions in pets and people. Sometimes the skin is ulcerated as well or ulcers are present on the lips tongue and mouth. The disease responds to injections and oral forms of corticosteroids such as methylprednisolone acetate. It also often responds to the human birth control medication, Depopovera (medroxyprogesterone acetate). Moving the cat to a different home or environment and feeding bland diets also help bring the disease into remission. I have also seen the skin and oral form of this disease disappear when fleas were eliminated from cats.
Inflammatory Bowel Disease of Ferrets
In this condition the lining of the stomach and small intestine becomes inflamed and may also ulcerate. Some feel that this condition is a form of autoimmune disease - others that it is due to allergies to various ingredients in ferret diets (possibly chicken). Perhaps both can play a part. Ferrets with this condition pass frequent loose watery stools and may also vomit. They become very thin. Diagnosis of this condition is often made by elimination of other causes. Exact diagnosis can only be made from biopsies of the pet’s intestine, which may require surgery. Because the symptoms are quite similar to acute and chronic bacterial gastroenteritis of ferrets, stool samples need to be cultured for these bacteria. When these causes of similar disease have been eliminated, the ferrets usually improve on a regimen of amoxicillin, metronidazole (Flagyl) and prednisolone. This disease is rarely cured but it can be managed. I usually also put these pets on Pepto-Bismol and Tagamet. It is hard to put weight on them because food moves too rapidly through their intestines and much of the absorptive power of the intestinal lining has been lost. This is why additional vitamins help these pets.
Lymphangiectasia Of Dogs
Sometimes called plasmacytic enteritis, this condition is diagnosed by a pathologist’s examination of snippets of the wall of the small intestine which are removed at surgery. Lymphangiectasia is an improperly formed intestinal lymphatic system, which results in protein being lost from the body (protein-loosing enteropathy). We think that in some cases the pets were born with this disease and in others they acquired it later in life. Most affected pets respond to a combination of bland diet and anti-inflammatory doses of corticosteroid drugs such as dexamethasone or prednisolone but the disease is never cured. Diets you prepared at home should contain minimal fat with ample amounts of high-quality protein.