Leawood woman’s lawsuit says Seresto flea collar killed her dog

A dog wearing a Seresto flea collar.

Seresto flea collars, once manufactured by Bayer, are now produced by Elanco Animal Health. Above, a screen shot from a video on how to use Seresto flea collars. Image via PetCareRx.

A Leawood woman is suing two corporations, including international pharmaceutical giant Bayer, over the companies’ Seresto flea collars, which she says killed her dog.

Catch up quick: Kathryn Byrd of Leawood has filed a federal lawsuit in the U.S. District Court in Kansas City, Kan., that names both Indiana-based Elanco Animal Health and German corporation Bayer as defendants.