Tainted pet food made headlines, but most people don’t realize what everyday toxins threaten their animal companions’ health.

In a recent study, D.C.-based Environmental Working Group found the blood and urine of companion cats and dogs contaminated with high levels of synthetic industrial chemicals.

Among culprits lurking at home, EWG senior scientist Olga Naidenko said, are flame retardants — chiefly polybrominated diphenyl ethers (PBDEs) in carpet padding, beds, couches, computers and TVs. Their neurotoxic effects influence brain development, learning, memory and behavior. PBDEs can decrease thyroid hormone levels and potentially cause cancer.