Aflatoxin is a toxic contaminant that shows up in commercial dog food from time to time. It can be deadly to dogs.

Some 19 brands of Diamond, Country Value and Professional dog food are now being recalled because of this contaminant. Symptoms of aflatoxin poisoning, according to the article, arise over days and weeks:

Early signs include lethargy, loss of appetite and vomiting. Later, look for orange-colored urine and jaundice, which is a yellowing of the eyes and gums. Severely affected dogs produce a blood-tinged vomit and bloody or blackened stools.

Apparently, some peoples’ dogs are also refusing to eat the contaminated food — so if your dog is turning up his nose at his kibble, think twice before dosing it up with gravy or something to get him to eat it.