Why the wrapper changes everything for a 10 kg dog
At this weight, your corgi's intestinal diameter is about the width of your thumb—easily obstructed by crumpled plastic. Even if they chewed the wrapper thoroughly, layered bits can clump together in the stomach. The berries themselves are the least concern right now unless they were moldy or fermented.
Note whether the plastic was stiff cellophane or soft cling wrap—the former poses higher perforation risks if sharp edges form. Twist ties or bag seals warrant immediate vet attention regardless of size due to metal components.
The critical first six hours window
Most dangerous wrappers either cause vomiting within three hours or get stuck further down. Offer small licks of water every twenty minutes—drinking too much at once could distend the stomach around the plastic. Resist giving bread or other "coating" foods—these can mask symptoms without helping passage.
Gently feel your dog's belly for unusual firmness or pain reactions. A tucked-up posture or frequent lip-licking suggests nausea developing. These signs mean the plastic may be lodging rather than moving through.
When "wait and see" becomes "go now"
If twelve hours pass with no bowel movement despite normal eating attempts, the wrapper may be forming a partial blockage. Dogs often keep drinking with obstructions but refuse food—a key difference from simple upset. Yellow bile vomiting is more concerning than bringing up berry remnants.
Press on their gums—delayed capillary refill (whiteness lingering over two seconds) indicates dehydration from persistent vomiting. This requires fluids under the skin, which you can't safely do at home.
Post-incident care even if all seems well
After 24-48 hours with no symptoms, the plastic likely passed, but check stools thoroughly for three days. Use gloves and break apart formations—wrappers often ball up inside fecal matter. A few streaks of bright red blood can occur from anal irritation but deeper maroon coloring means internal scraping.
Prevent repeat incidents by transferring berries to hard containers immediately after purchase. Dogs remember where treasures hide—that bag rustle will now trigger excitement. Consider keeping fruit higher up; corgis are Olympic-level counter surfers when motivated.
The full verdict, portion guidance and serving notes are collected on the Blueberry food facts page.