Dog Protein-Losing Enteropathy | Animal Welfare Hub

Protein-losing enteropathy causes severe protein depletion from intestinal disease, creating life-threatening complications including fluid accumulation and clotting disorders.

Key Facts

PLE occurs when intestinal disease allows excessive protein loss into the gut
Yorkshire Terriers, Soft-coated Wheaten Terriers, and Norwegian Lundehunds are predisposed breeds
Low albumin causes fluid to shift into body cavities causing ascites and pleural effusion
Intestinal lymphangiectasia (lymphatic vessel dilation) is a common cause
Lymphoma and inflammatory bowel disease also cause significant PLE
Ultra-low fat diets are essential for managing lymphangiectasia
Vitamin supplementation for B12, D, and E is typically required
Prognosis varies widely from fair to guarded depending on underlying cause

Welfare Considerations

Dogs with severe PLE experience abdominal and thoracic fluid accumulation that causes breathlessness, abdominal distension, and profound weakness. Low albumin also impairs immune function and increases bleeding risk. The dietary restrictions required for management (ultra-low fat, often hydrolyzed protein) may reduce palatability, making nutrition a continuous challenge. The severity and chronicity of PLE creates sustained welfare burden requiring intensive management and honest quality-of-life assessment.

What You Can Do

Seek specialist gastroenterology evaluation for dogs with chronic diarrhea and weight loss
Request albumin and total protein testing to detect protein depletion early
Feed ultra-low fat diets consistently in dogs with confirmed lymphangiectasia
Supplement B12, vitamin D and vitamin E as guided by your veterinarian
Monitor abdominal girth and breathing as welfare indicators of fluid accumulation