Searchbreed
Symptom guide · See a vet in person

Dog Weight Loss

Losing weight without trying, visible ribs or spine, or muscle loss — especially concerning when appetite is normal or increased.

Causes

8

Red flags

5

Prone breeds

8

Related

4

Triage

See a vet in person

Unexplained weight loss needs an in-person exam and often bloodwork, fecal testing, or imaging. Telehealth can help triage, but it cannot replace diagnostics here.

When to call the vet now

Any of these signs means telehealth isn't enough — get in-person vet care today.

  • ×weight loss despite normal or increased appetite
  • ×weight loss plus increased thirst or urination
  • ×diarrhea, vomiting, or greasy stool
  • ×visible muscle wasting
  • ×older dog with new weight loss
Causes

Common causes

  • not eating enough due to nausea, pain, or stress
  • dental disease
  • intestinal parasites
  • diabetes mellitus
  • kidney or liver disease
  • exocrine pancreatic insufficiency (EPI)
  • inflammatory bowel disease
  • cancer
Breeds

Breeds most prone to weight loss

Not exhaustive — any dog can have this. These breeds are just more commonly affected.

Recommended

What can help

Products and services matched to this symptom.

telehealth

Dutch

24/7 vet care and prescriptions delivered

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  • Rx delivered to door
  • $11/month
  • Covers anxiety, allergies, derm
See Dutch
telehealth

Vetster

Book online vet appointments with licensed professionals

  • Licensed vets online
  • 24/7 appointment access
  • Video, chat, and voice
  • Prescription support where permitted
See Vetster
fresh food

The Farmer's Dog

Fresh, human-grade food portioned for your dog

  • Human-grade fresh food
  • Portioned per dog
  • Vet-developed recipes
  • 50% off first box
See The Farmer's Dog
fresh food

Ollie

Fresh food with both cooked and baked recipes

  • Fresh and baked recipes
  • Turkey, beef, lamb, chicken proteins
  • Custom portions
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See Ollie
Related

Related symptoms

Searchbreed is not a veterinary service and does not diagnose or prescribe. This is educational content to help you understand your dog's symptoms. For diagnosis and treatment, talk to a licensed vet.