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Health A-Z

Common Pet Conditions

Start with a symptom, then learn what to monitor and what your vet may check.

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Clear symptoms
loss of appetite (2) and bloody (1) and occasional shaking. In an acute crisis (1) and rapid dehydration. In kittens (1) and weakness (1) death may occur within 48–72 hours after onset of clinical signs (1) diarrhea (1) dogs can collapse with shock (1) Dogs may experience lethargy (1) foul-smelling diarrhea that can quickly lead to life-threatening dehydration. Affected pups often develop abdominal pain and bloating. The virus’s attack on bone marrow leads to low white blood cell counts (1) General symptoms include lethargy (1) increased thirst and urination (1) increasing risk of sepsis (1) it can be rapidly fatal (1) lethargy (1) severe vomiting (1) severe vomiting and diarrhea (1) severe vomiting/diarrhea (1) Signs include high fever (1) so fever and septic shock can occur in advanced cases. Without prompt treatment (1) vomiting (1) weight loss (1)
Symptom matches are best-effort. If a symptom is severe or sudden, contact a veterinarian promptly.

Infectious and Parasitic

1 items
Image for Feline Panleukopenia (Feline Distemper)
Feline Panleukopenia (Feline Distemper)
Cat - All cats are susceptible; unvaccinated kittens are at highest risk
Signs include high fever lethargy loss of appetite severe vomiting and diarrhea and rapid dehydration. In kittens it can be rapidly fatal

Feline panleukopenia is a parvoviral infection that causes severe gastroenteritis and immune suppression. The…

Legacy / Unmapped

2 items
Image for Addison’s Disease (Hypoadrenocorticism)
Addison’s Disease (Hypoadrenocorticism)
Dog - All breeds can be affected; however, certain breeds (e.g. Standard Poodles, Bearded Collies, Portuguese Water Dogs, Nova Scotia Duck Tolling Retrievers, Leonbergers, Great Danes, Labrador Retrievers) have a higher risk
Dogs may experience lethargy vomiting diarrhea weight loss increased thirst and urination and occasional shaking. In an acute crisis +3 more

Addison’s disease is an endocrine disorder in which the adrenal glands fail to produce sufficient cortisol an…

Image for Canine Parvovirus (Parvo)
Canine Parvovirus (Parvo)
Dog - All Breeds (unvaccinated puppies at highest risk; e.g. Rottweiler, Doberman Pinscher, Labrador, German Shepherd)
General symptoms include lethargy severe vomiting loss of appetite and bloody foul-smelling diarrhea that can quickly lead to life-threatening dehydration. Affected pups often develop abdominal pain and bloating. The virus’s attack on bone marrow leads to low white blood cell counts increasing risk of sepsis +2 more

Parvovirus is a highly contagious and often fatal viral disease that attacks rapidly dividing cells, most sev…

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.