Three pellets divide by weight, not by count
That identical pellet count becomes a 6x difference in dose when comparing a 5 kg Pomeranian to a 30 kg Lab. Metaldehyde's toxicity follows body weight — think of it like three shots of whiskey for a child versus an adult. The small dog's system will reach lethal concentration faster because there's less blood and tissue to distribute the toxin.
For the Pomeranian, three pellets likely exceed the minimum toxic dose per kilogram. Signs like drooling or agitation could start within 20 minutes. The Lab might show mild stomach upset initially, but their size buys time for intervention. Still, no dog is 'safe' after eating metaldehyde — just on different urgency timelines.
Metabolism speed in small breeds
Pomeranians have faster heart rates and metabolic rates than large breeds, circulating the toxin quicker to vital organs. Their compact size also means less fat to temporarily store the metaldehyde, so more stays active in the bloodstream. What looks like the same snack becomes a race against time for the small dog.
Watch the Pomeranian closely for muscle twitches or ear flicking — subtle signs that often precede full tremors. The Lab may just seem nauseated at first, but don't assume that means safety. Metaldehyde can still cause delayed liver damage in larger dogs, though the immediate seizure risk is lower with their body mass.
Why packaging matters more for the small dog
The bait's exact metaldehyde percentage dictates treatment urgency for the Pomeranian. At 5 kg, even a 3% concentration in three pellets could be critical, whereas the Lab might handle that same amount with monitoring. Bring the packaging or take clear photos of the ingredient list — vets calculate risk differently for these two body sizes.
Small dogs often need more aggressive treatment like intravenous lipid therapy to bind the toxin, while a large dog might get by with observation and oral medications. But never assume the Lab is out of danger — some bait formulations contain additional attractants that can cause separate issues like pancreatitis in any size dog.
The weight-based timeline of symptoms
Expect the Pomeranian to show neurological signs within the hour if help isn't sought. For the Lab, symptoms may take 2-3 hours to appear, but that doesn't mean you should wait. Metaldehyde's effects aren't linear — once symptoms start in either dog, they escalate rapidly regardless of size.
Transport both dogs carefully, but prioritize the Pomeranian's trip. Seizures in a tiny body strain the heart more than in a large dog, raising the risk of fatal complications. The Lab's size offers a buffer, but still requires professional assessment — liver values might spike later even without early neurological signs.
For a dose worked out against your pet's weight, use the Slug Bait (Metaldehyde) Toxicity Calculator.