ohmidog!

Using stainless steel salad tongs and simulated doggie drool, a Texas Tech researcher conducted tests on dog toys and determined some of them, under chewing-like conditions, leach chemicals that could harm dogs.

Phil Smith, an asssociate professor of terrestrial ecotoxicology — say that three times fast — presented his findings this week at the Society of Environmental Toxicology and Chemistry conference held in California.

Among the toys tested, the worst offenders appear to be plastic fetching batons, or bumpers, which are used to teach dogs how to retrieve, according to a report on his findings by Discovery.com.

Smith, who raises Labrador retrievers, uses bumpers often, and got to wondering whether — with all the reports of dangerous chemicals in plastic — they were causing harm.

“In the process of training a Lab, you do a lot of work with these plastic bumpers,” Smith said in a press release. “I have a lot of bumpers in my garage, and they spend a lot of time in the mouths of my retrievers … Since we all care about our dogs, and we want them to be as healthy and smart and well-behaved as possible, we decided to look into this.”

Smith and Kimberly Wooten, his colleague at Texas Tech University, suspected that bumpers and other dog toys could leach phthalates and bisphenol A (BPA) into the mouths and bodies of dogs. The chemicals are what give elasticity to plastic and vinyl and they are known endocrine disruptors that mimic estrogen or act as anti-androgens, according to Discovery.com.  

To test for the chemicals, the researchers created simulated dog saliva, then simulated chewing by squeezing dog toys with stainless steel salad tongs. Toys were also weathered outside to determine if older toys gave off more chemicals.

“We found that the aging or weathering the toys increased concentrations of BPA and phthalates,” Smith said. “The toys had lower concentrations of phthalates than the bumpers, so that’s good news. But they also had some other chemicals that mimicked estrogen. We need to find out what those are.”

Wooten said that BPA and phthalates can have effects on developing fetuses. Studies on humans have resulted in mixed conclusions, but raised enough concern that the U.S. government banning the use of BPA in baby bottles this year.

“The interaction of pet health and environmental chemicals is understudied,” Wooten said. “What may be a safe dose for one species isn’t always a good measure for another species. But the amount of BPA and phthalates we found from the bumpers would be considered on the high end of what you might find in children’s toys.”