Giardia, tiny protozoan parasites, can affect dogs and cats. The parasites live in the intestines of animals and pass through the stool. Escherichia coli, usually referred to as E coli, is also found in the intestines of mammals, and certain strains of the gram-negative bacteria are harmful to pets. If your dog or cat has symptoms, take it to a veterinarian at once for diagnosis and treatment. While antibiotics may knock out giardia, harmful E coli is not particularly responsive to these drugs.
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Diarrhea in Dogs
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The main symptom of giardia infestation is diarrhea. Very common in puppies, giardia may be transmitted through feces, contaminated water and raw or undercooked food. E coli is also transmitted in this manner. Dog parks and kennels are common sources of the parasite. Many dogs carry the parasite but remain asymptomatic. Take any dog with diarrhea lasting more than one day, or any severe case, to the vet for testing and treatment.
Diarrhea in Cats
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Loose stools and diarrhea in cats may indicate giardia, especially if feces are yellow and foam-like. Felines often pick up the parasite from contaminated water sources. Often asymptomatic, cats can continue to shed giardia for years. For this reason, bring in a stool sample to the vet for the cat's annual check-up. According to Cat World, younger cats in multi-cat environments are more likely to develop clinical signs if carrying giardia.
Vomiting/Stomach Cramps in Cats
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Cats with giardia may vomit or experience stomach cramping. Dry heaving could signal stomach cramps. They may also pass excessive gas or have abdominal extension. These could be symptoms of a variety of feline ailments, so prompt veterinary treatment is necessary.
Weight Loss/Dehydration in Cats
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Cats with this condition may lose weight or become dehydrated, even though water is available. These symptoms mimic other conditions, so it is important to bring the cat to the veterinarian.
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