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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
dehydration (2) loss of appetite (2) and a poorly groomed coat can occur if untreated (1) and bloody (1) and diabetic ketoacidosis (1) and lethargy. Advanced cases may present with vomiting (1) and loses weight. Lethargy (1) and rapid dehydration. In kittens (1) death may occur within 48–72 hours after onset of clinical signs (1) evaluate for dehydration-related red flags and progression (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) has a voracious appetite (1) increased appetite with weight loss (1) increased appetite yet weight loss are classic signs. Owners may notice the cat drinks and pees far more than normal (1) Increased thirst and urination (1) increased urination (1) increasing risk of sepsis (1) it can be rapidly fatal (1) lethargy (1) severe vomiting (1) severe vomiting and diarrhea (1) Signs include excessive thirst (1) Signs include high fever (1) Signs may vary (1) so fever and septic shock can occur in advanced cases. Without prompt treatment (1)
Symptom matches are best-effort. If a symptom is severe or sudden, contact a veterinarian promptly.

Endocrine and Metabolic

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Image for Diabetes Mellitus
Diabetes Mellitus
Cat - All breeds (obesity is a risk factor; Burmese cats may have higher risk)
Increased thirst and urination increased appetite yet weight loss are classic signs. Owners may notice the cat drinks and pees far more than normal has a voracious appetite and loses weight. Lethargy dehydration and a poorly groomed coat can occur if untreated

Endocrine disorder characterized by inadequate insulin production or insulin resistance, leading to chronic h…

Image for Diabetes Mellitus (Canine)
Diabetes Mellitus (Canine)
Dog - Any breed can develop diabetes; higher incidence in middle-aged to senior dogs (e.g. Miniature Schnauzers, Poodles, Dachshunds, Beagles, Golden Retrievers, Labrador Retrievers)
Signs include excessive thirst increased urination increased appetite with weight loss and lethargy. Advanced cases may present with vomiting dehydration and diabetic ketoacidosis

Diabetes mellitus in dogs is an endocrine disorder characterized by insufficient insulin production, leading …

General and Multi-System

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Image for Dehydration
Dehydration
Reviewed
Dog - Can occur across breeds depending on risk factors.
Signs may vary evaluate for dehydration-related red flags and progression

Dehydration is included in the VetSCT clinical taxonomy. This page provides owner and veterinary context, tri…

Infectious and Parasitic

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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

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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.