The maker of Greenies, the country’s best-selling dog treat, said Wednesday it would change its packaging in response to complaints from some pet owners and veterinarians that the treat could pose a health hazard to some dogs.

S&M NuTec, based in North Kansas City, Mo., also said it may remove a claim that Greenies are fully edible, saying its own study shows a dog can only digest up to 85 percent of the treat.

“What we’re interested in is the safety of the dog,” said Joe Roetheli, the company’s co-founder and chief executive.

Roetheli said the company plans to enlarge and expand wording on the packaging that tells dog owners to carefully monitor their pets when feeding them Greenies and make sure they feed their dog the right size of treat.