Yes, lead. Lead is not in the tennis balls we use for tennis, but in the tennis balls intended for our dogs. According to a study done over half the tennis balls intended as toys for dogs had detectable levels of lead. One ball tested had almost 3,000 ppm. That is a pretty high concentration. Children’s toys are allowed to have up to 600 ppm. Having lead levels this high is not only bad for our dogs, but anyone who plays with the dog and these tennis balls. How many of us got rid of piles of toys when all those warnings about lead in our children’s toys came out. Most pet products are not regulated very well. It’s up to us to research and look for products that don’t have chemical additives. Below is the link which lists all the balls tested and their results.
Lead Tennis Balls? September 16, 2009