Why your other dogs aren't at risk from this chia incident
Since only your 8 kg dog ate the soaked chia seeds, there's absolutely no need to worry about your other dogs. Chia doesn't release any toxins or create airborne risks — it's only dangerous to the animal that actually consumes it, and even then only in specific circumstances. The fact that the seeds were pre-soaked means they've already undergone their expansion, eliminating the main hazard.
Unlike some foods where crumbs or residues could affect multiple pets, chia seeds don't work that way. Your other dogs couldn't be exposed by sniffing the eater's mouth or sharing water bowls afterward. The only way another dog would be at risk is if they directly ate dry chia seeds from the same source — and even that would be a separate incident requiring its own evaluation.
How an 8 kg dog's system handles soaked chia
Your dog's size puts him well above the weight range where small amounts of chia would be concerning. At 8 kg, his digestive tract can easily pass the soft gel that soaked chia becomes. The seeds' fiber content might slightly bulk up his stool, but won't cause the painful blockages that dry chia potentially could in smaller animals.
For context, the dangerous amount of dry chia would be roughly a quarter cup swallowed quickly by a dog his size — and even then, it would have to be dry. What he ate was already transformed into a harmless, slippery substance that provides fiber without the risks. Still, if he scarfed it down very fast, watch for temporary fullness or mild stomach gurgling.
Signs that would mean trouble after chia consumption
While complications are unlikely with soaked chia, you should still monitor your dog for any unusual behavior over the next day. The main red flags would be repeated attempts to vomit without bringing anything up, or distress when trying to swallow. These could indicate an obstruction, though that's extremely improbable with pre-soaked seeds in a dog his size.
More probable but still uncommon would be loose stools from the sudden fiber increase. If this occurs, withhold food (not water) for 12 hours to let his system reset. Significant bloating or lethargy would be unexpected with soaked chia and should prompt a vet visit, as these could signal an unrelated issue coinciding with the chia meal.
Keeping multiple dogs safe around human foods
This incident highlights how important it is to control access when introducing any new food item to a multi-dog household. Even when something is safe like soaked chia, some dogs may be more sensitive than others. Feed supplements separately to avoid competition or accidental overconsumption by the more food-motivated pack members.
Store all dry chia and similar expanding foods in chew-proof containers well out of reach. Remember that while your 8 kg dog handled this well, a smaller dog in your pack might react differently to the same amount. When in doubt about any food's safety for multiple pets, assume the most sensitive animal's limits apply to everyone until you've confirmed otherwise with your vet.
The full verdict, portion guidance and serving notes are collected on the Chia seeds food facts page.