Warfarin is one of several compounds that may be used in rodent poisoning. Many dogs and cats (especially farm pets) are poisoned by warfarin each year — either from eating the rodent bait or by eating a rodent that has eaten the bait. This is the most common cause of poisoning in pets. Warfarin causes internal bleeding because it blocks the body’s production of clotting agents — proteins that allow the blood to clot. The body has a supply of clotting proteins already, so it may take a day or two after the poison has been ingested for symptoms to … Continue reading →