BLUF: Immediate triage evaluation for FIP to determine required emergency protocols. This condition requires rapid diagnosis and immediate access to modern therapeutics; review symptoms and consult a vet immediately.

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FIP (Feline Infectious Peritonitis) Triage

Cats sleep a lot, but true lethargy is different from normal sleepiness. It means your cat has no energy, refuses to move, or is unresponsive.

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Abdominal swelling (fluid buildup)
Persistent high fever unresponsive to antibiotics
Severe lethargy and weakness
Yellowing of the eyes or skin (jaundice)
Neurological symptoms like stumbling or seizures

Immediate Care Guides

Download our comprehensive step-by-step emergency care protocols.

Safe to Monitor at Home

Isolated mild lethargy without fever
Eating normally despite slight weight loss

In our experience

In our experience, a cat that won't lift its head for its favorite treat is a cat that needs a vet immediately. Never ignore profound lethargy.

Written by: Dr. E. R. Sinclair (DVM Consult) & Editorial Team

Our emergency triage guides are developed by experienced veterinary technicians and reviewed by consulting veterinarians to ensure you have the most accurate, immediately actionable protocols before you reach the clinic.