Diarrhea in Your Dog
Many pups end up with diarrhea when they go to their new homes. There are many causes for this, most of which are covered in the article below. Most common with the pups, is just the stress of leaving a surrounding that they know and are familiar with, to one where they are not. It could also be a change in food, or as simple as a change in water.

Something I recently learned about treating diarrhea is the use of fresh cooked or canned pumpkin. (not pumpkin pie filling). Pumpkin - about 1 tsp. for a small dog, less for a pup, per day, will help soothe the tummy and quickly reduce and put an end to the diahhrea. So, when you have a dog it's wise to keep a can of pumpkin in the cupboard! Once opened, you can freeze small amounts to give when needed. I have read that it is something good for your dog, and that you can use it on a regular basis (weekly) without doing any harm to your dog. One article mentioned freezing ice cube sizes and giving them as a treat on hot summer days. (adult dogs only) This is something I am going to be doing!

Another thing you can try is to switch to a simple meal of cooked white rice with a bit of cooked chicken or cooked ground beef. Plain white yogurt is also good for dogs in small quantities.
When your pups tummy gets back to normal, give it another week or so, and then slowly re-introduce the kibble you will be feeding.

Pups also can come down with the affects of Coccidiosis - Young puppies are frequently infected with coccidia and often develop active Coccidiosis—even puppies obtained from diligent professional breeders. Infected puppies almost always have received the parasite from their mother's feces. Typically, healthy adult animals shedding the parasite's oocysts in their feces will be asymptomatic because of their developed immune systems. However, undeveloped immune systems make puppies more susceptible. Further, stressors such as new owners, travel, weather changes, and unsanitary conditions are believed to activate infections in susceptible animals.

Symptoms in young dogs are universal: at some point around 2–3 months of age, an infected dog develops persistently loose stools. This diarrhea proceeds to stool containing liquid, thick mucus, and light colored fecal matter. As the infection progresses, spots of blood may become apparent in the stool, and sudden bowel movements may surprise both dog and owner alike. Other symptoms may include poor appetite, vomiting, dehydration, and sometimes death. Coccidia infection is so common that any pup under 4 months old with these symptoms can almost surely be assumed to have coccidiosis.

This is information I gleaned from the internet on Diahhrea in your dog.

Excerpts below are taken from www.dogchatforum.com

Diarrhea is not a disease itself but rather a symptom that something is not right with your dog's health or gastrointestinal system. Diarrhea is the passing of unformed, frequent, and increased volume of stool.

Many dogs, like humans, may occasionally suffer from an acute bout of diarrhea. Acute means coming on suddenly and lasting no longer than a few days. If your dog is well and has no other symptoms other than a frequent loose bowel motion there is probably no cause for immediate alarm and you can treat it at home. There are many causes for diarrhea, for example your dog may have eaten something disagreeable. Other causes could include a sudden change in diet, food allergies, worm infestation or viral or bacterial infection.

If your dog has any of the following symptoms in conjunction with diarrhea seek veterinary advice Fever
Pain
Vomiting
Blood in the diarrhea
Lethargy or depression
Weight Loss
Dehydration
Loss of appetite
Foul smelling diarrhea
Any other sign of illness

What you can do at home for diarrhea

Withhold food (but not water) for 24 hours (12 hours for young puppies) to give your dog's digestive system a rest. Then feed him a bland diet of 50% boiled rice and 50% chicken or 50/50 boiled rice and cooked hamburger for the next two to three days. If the diarrhea doesn't resolve seek advice from your vet.

Watch out for dehydration

A lot of water is lost from the dog's system when passing frequent watery motions so watch your dog for symptoms of dehydration. Sticky or dry gums can often indicate dehydration.

Encourage him to drink plenty of water or Lectade may be given. Lectade, an oral re-hydration therapy for cats and dogs can be used to reverse the effects of dehydration and loss of electrolytes following diarrhea. In the first 24 hours this should be given at the rate of 8-30mls every half hour by mouth. For example a small toy dog would require 8mls and a large dog such as a german shepherd would require 30mls.

Diet can cause diarrhea in dogs

If the diarrhea has come on suddenly consider if you have made any changes to his diet. Often cheaper brand dog foods can cause diarrhea as can a sudden change in diet. Feed your dog a good high quality diet. Cheap dog food may ultimately cost you more with higher vet bills. My advice is to feed your dog the best possible food that you can afford. Cheaper dog foods are bulked out with vegetables and carbohydrates which pass straight through your dog.

Rule of thumb: If you put rubbish into your dog, rubbish will come out of your dog.

Diarrhea can also be caused by dairy intake in dogs due to lactose intolerance. Dogs and puppies do not need to be given milk to drink.

Don't feed dogs people food. Especially spicy food.

Worms can cause diarrhea in dogs

Worms, such as roundworm, hookworm, whipworm and tapeworm can cause diarrhea in dogs so ensure they are given de-worming medication regularly.

Viral Infections that cause Diarrhea in dogs and puppies

Parvovirus
Parvovirus enteritis is a highly contagious, viral disease which can be fatal. Symptoms include vomiting, bloody diarrhea, dehydration, dark or bloody feces, lethargy and unwillingness to eat. Puppies are often the most severely affected.
Veterinary treatment must be sought. Treatment of parvo may consist of IV fluids, anti inflammatory drugs, antibiotics and anti-spasmodic drugs.

Distemper
Canine Distemper is also a highly contagious viral disease which is often fatal. Diarrhea is one of the many symptoms. Read more about Canine Distemper

Bacterial Infections that cause Diarrhea in puppies and dogs
Bacterial infections such as E. coli, Campylobacter jejuni and Salmonella varieties can cause severe abdominal pain often accompanied with bloody diarrhea.
Discuss your options with a veterinarian in order to determine your best course of action.

Parasites that cause diarrhea in Dogs and Puppies
Coccidiosis Coccidiosis is very common problem, especially among puppies
Diarrhea is the main sign of coccidiosis. Blood and mucous in the diarrhea is a common symptom.
Your vet may prescribe Sulfa antibiotics. This will not kill the organism but will keep it in check until your puppy develops a good level of immunity.

Giardia
Giardia is a waterborne protozoa which is difficult to detect from stool samples. Symptoms in puppies and dogs include diarrhea with mucus and having a pale greasy appearance. The diarrhea may be greenish or yellowish. There may also be blood in the diarrhea. The diarrhea can be explosive. There is usually a very bad odor to the diarrhea. Other symptoms are weight loss, abdominal pain, vomiting, poor appetite, excessive grass eating, and excessive gas.
You must seek veterinary advice. Treatment usually involves a drug called Metronidazole ( Flagyl ) which is an anti protozoal. This drug can be used alone or in combination with another similar drug called Fenbendazole.

Pumpkin for Diarrhea and Constipation
It's quite remarkable that fresh pumpkin cooked and mashed or canned pureed pumpkin (if using canned: do not use the pie filling variety but the 100% natural canned pumpkin) can work wonders for both the occasional bout of diarrhea or for the opposite, constipation in dogs. It has been reported that it firms up dog's loose stools or diarrhea within a few hours. How much pumpkin should you give? It depends on the size of the dog but as a rule of thumb a couple of teaspoons daily for a small dog or a couple of tablespoons for a large dog. You may have to disguise it in you dog's favorite food.

Chronic Diarrhea
If your dog has chronic diarrhea (Chronic means continuing for a long time, lingering or persistent) then medical advice should be sought. Always check with your vet if diarrhea is severe or persistent. Diarrhea can be life threatening.

Some Possible Causes of Diarrhea in Dogs and Puppies

  • Diet
  • Drinking Milk (Lactose Intolerance)
  • Eating Garbage
  • Infection (viral or bacterial)
  • Worms
  • Parasites such as giardia & coccidia
  • Bowel Disease
  • Poisoning
  • Cancer
  • Blockage (foreign object)
  • Pancreatitis
  • Kidney disease
  • Liver disease
  • Hormone Imbalance
  • As you can see there are many causes of diarrhea in dogs and puppies. If diarrhea persists you should seek advice from your vet.