GI Upset After Boarding or Kennel Stays: Why It Happens So Often

Digestive upset after a boarding stay is common enough that many vets and boarding facilities treat it as an expected possibility rather than a surprise, sometimes informally referred to as "kennel diarrhea" or attributed to stress colitis. The combination of an unfamiliar environment, different routine, sometimes different food or water, other dogs' presence, and general separation stress adds up to a real physiological effect on gut function for a lot of dogs.

This is distinct from more concerning causes like kennel cough (a respiratory rather than digestive illness, despite the name overlap causing some confusion) or, less commonly, actual infectious gastrointestinal illness picked up from close contact with other dogs, which does happen occasionally in higher-turnover boarding environments despite good sanitation practices.

Most stress-related boarding diarrhea resolves within a few days once the dog is back in a familiar environment and routine, without needing specific treatment beyond supportive care like a bland diet.

What to do: For mild diarrhea in the days following a boarding stay, in a dog who's otherwise energetic and eating, a bland diet and a few days of monitoring at home is generally reasonable. If it persists beyond 3-4 days, worsens, or comes with vomiting, lethargy, or blood, it's worth a vet visit to rule out an infectious cause rather than continuing to assume it's just stress. Requesting your dog's regular food be sent along for boarding stays, when the facility allows it, can reduce one variable in the mix.

For a fuller look at travel and boarding-related digestive upset generally, here's more on the pattern and what typically helps.