Why the 10 kg eater needs your focus now
The butter coating is the main issue here—it's likely salted, and that combination can trigger pancreatitis in susceptible dogs. At 10 kg, your dog ate enough to warrant monitoring, while the others avoided the risk entirely. The volume matters less than the fat content: even a handful could represent 10% of his daily fat allowance, overwhelming his pancreas.
Check his gums—if they're tacky instead of slick, the salt is pulling fluid from his system. Offer ice cubes if he's reluctant to drink; the cold helps counteract nausea from the fat. Don't induce vomiting, as that could aspirate popcorn pieces into his lungs. Note the time—pancreatitis symptoms usually appear within 12-24 hours.
The hidden danger in buttered popcorn
That shiny butter coating often contains garlic or onion powder for flavor—toxic to dogs in concentrated amounts. While the sprinkle on popcorn is usually minimal, it's why we never assume "butter" means just dairy. Your 10 kg dog's size gives him some buffer, but watch for pale gums or lethargy over the next day.
Unpopped kernels in buttered popcorn are doubly dangerous—the dog licks off the tasty coating then cracks the hard seed. Listen for odd chewing sounds if he tries to eat more later. A kernel wedged in molars can cause pawing at the mouth or drooling you might mistake for nausea.
How to adjust the next 24 hours for him
Skip his next meal if it's within 6 hours of the incident—let his stomach settle. When you do feed, offer bland boiled chicken and rice instead of his regular kibble. The low-fat meal gives his pancreas a break. Watch stool consistency; butter can cause greasy, yellowish diarrhea within 12 hours.
Exercise should be leash-only tonight—no vigorous play that could twist a gut irritated by the popcorn. If he starts standing with elbows out and back arched (the classic "pancreatitis posture"), it's vet time. Otherwise, the other dogs can stay with him—their normal behavior helps keep him calm.
Why weight differences changed the risk
The 5 kg dog would be at greater risk from the same handful due to smaller organ capacity, while the 20 kg dog's size could handle it better. Your 10 kg middle-weight is in the gray zone—not automatically critical, but not dismissible either. His individual health history matters more now: if he's ever had a fatty meal reaction before, err toward calling the vet.
Popcorn incidents highlight how toxicity isn't just about substance, but portion relative to body size. The same buttered handful that barely affects a 30 kg Labrador could hospitalize a 5 kg Chihuahua. Always assess snacks by the smallest pet in the room—what's "shared" isn't equally processed.
The full verdict, portion guidance and serving notes are collected on the Popcorn food facts page.