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Common Pet Conditions

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foul-smelling (1) Many adult dogs show no signs or only soft stools. Symptomatic cases (more common in puppies or stressed dogs) typically have diarrhea that can be acute (1) often with a greenish tinge or mucus. The diarrhea may be intermittent or continuous and can contain blood in severe infections. Affected dogs might have weight loss and poor coat condition due to malnutrition. Vomiting occurs in some cases. The dog usually remains alert and eating (1) soft or watery (1) though in heavy infestations appetite might decrease (1)
Symptom matches are best-effort. If a symptom is severe or sudden, contact a veterinarian promptly.

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Image for Giardiasis (Giardia)
Giardiasis (Giardia)
Dog - All Breeds (higher risk in puppies and dogs in group housing or unsanitary conditions)
Many adult dogs show no signs or only soft stools. Symptomatic cases (more common in puppies or stressed dogs) typically have diarrhea that can be acute foul-smelling soft or watery often with a greenish tinge or mucus. The diarrhea may be intermittent or continuous and can contain blood in severe infections. Affected dogs might have weight loss and poor coat condition due to malnutrition. Vomiting occurs in some cases. The dog usually remains alert and eating though in heavy infestations appetite might decrease

Giardiasis is an intestinal infection caused by the protozoan parasite Giardia. Dogs become infected by inges…

For pet owners
Use this page to learn what a symptom can mean, what to track at home, and when to get help. Bring notes to your appointment (timeline, appetite, water intake, urination, stool, vomiting episodes, medications and supplements).
For veterinary perspective
Each condition page summarizes common presentations, typical evaluation steps, and treatment approaches. It is not a substitute for diagnosis. Your veterinarian will consider breed, age, exam findings, and tests.