How 10 kg body weight changes caffeine absorption
A 10 kg dog eating coffee grounds faces immediate caffeine toxicity risks—restlessness, panting, or elevated heart rate can start within an hour. Smaller breeds process caffeine slower, so symptoms may persist longer than in a larger dog. Combined with mold toxins from compost, this creates overlapping metabolic stresses.
Watch for vomiting paired with tremors; this suggests both caffeine and mycotoxins are active. Mold’s tremorgenic compounds often delay symptoms by six to twelve hours, so early caffeine signs don’t rule out later complications. Your dog’s size means higher absolute tolerance than a cat, but the dose per kg still matters.
Why the uneaten dog isn’t automatically safe
While your other dog didn’t consume compost directly, shared environments risk indirect exposure. If the dogs groom each other, coffee ground residue on fur could transfer orally. Parasite eggs from pet waste in compost also contaminate nearby soil—ingesting dirt during play poses separate risks.
Monitor the uneaten dog for diarrhea or unusual scratching, which might indicate parasite exposure rather than toxin ingestion. Keep both dogs away from the compost area entirely, as repeated access increases the chances of future incidents.
Coffee grounds versus moldy scraps in compost
Your dog ingested two distinct hazards: caffeine from coffee grounds and tremorgenic mycotoxins from moldy food. Caffeine stimulates the central nervous system rapidly, while mold toxins disrupt motor control hours later. This combination requires longer observation than either toxin alone.
If your dog only ate coffee grounds, symptoms would peak sooner and fade faster. Mold toxins linger, sometimes causing recurrent seizures days after ingestion. The presence of both means monitoring must extend beyond the initial 24-hour window.
Multi-dog households and resource guarding risks
Dogs who steal compost often guard it from others, preventing shared ingestion but increasing the eaten dog’s dose. Your 10 kg dog may have consumed everything he found, concentrating the toxins. The uneaten dog’s safety depends entirely on whether he had access—check his muzzle for coffee ground stains just in case.
This behavior difference is critical: a dog who guards trash gets a higher per-kg dose than one who shares it. Adjust your monitoring intensity accordingly. Assume the uneaten dog is safe only if he showed zero interest in the bin.
The step-by-step response, from the first minute to the vet visit, is in our Compost Bin Toxins: Dangers to Dogs and Cats emergency guide.