Elanco Animal Health, a former subsidiary of Eli Lilly and Co., did not immediately respond to a request for comment. Elanco purchased German pharmaceutical giant Bayer's animal health division in 2019 for $7.6 billion. In its 2019 annual report, German agribusiness and pharmaceutical company Bayer reported revenue of more than $300 million on Seresto alone. In previous interviews, Elanco has said that it has reviewed the 1,698 incident reports related to pet deaths and found no link between the collars and the deaths.