It's Time to Start Checking for Ticks: Bayer Animal Health Offers Tips to Protect Humans and Dogs from Discomfort and Disease.

SHAWNEE, Kan. -- Bayer Animal Health is reminding pet owners that now is the time to consider their options for protecting both themselves and their pets from the discomfort and disease that can be caused by fleas, ticks, and mosquitoes.

For dogs residing in rural or suburban settings, or those accompanying their owners in outdoor activities such as hunting or camping, "the big three" -- fleas, ticks, and mosquitoes -- may pose serious threats. In fact, they can lead to a host of Canine Vector Borne Diseases (CVBD), such as ehrlichiosis, Lyme disease, heartworm disease, and Rocky Mountain spotted fever. And humans need to be careful as well. In its publication, "What campers, hikers, hunters, and people working outdoors should know," The Centers for Disease Control and Prevention (CDC) recommends the use of repellants to protect humans from ticks. The CDC states, "Apply repellants to discourage tick attachment. Repellents containing permethrin can be sprayed on boots and clothing, and will last for several days. Repellents containing DEET (n, n-diethyl-m-toluamide) can be applied to the skin, but will last only a few hours before reapplication is necessary.1

For dogs, K9 Advantix([R]) from Bayer Animal Health is a once-a-month topical flea, tick, and mosquito treatment that contains permethrin and imidacloprid. K9 Advantix repels and kills fleas, ticks, and mosquitoes on dogs and puppies 7 weeks of age and older. K9 Advantix is not for use on cats.

K9 Advantix([R]) is proven effective against the four most common ticks found on dogs in the United States: the Brown dog tick, vector of the organism that can cause ehrlichiosis; the American dog tick, vector of the organism that can cause Rocky Mountain spotted fever; the Deer tick, vector of the organism that can cause Lyme disease; and Lone Star tick, suspected vector of several vector-borne infectious organism diseases.

"Fleas, ticks, and mosquitoes are more than a nuisance to dogs -- they're a threat because they can carry and transmit the organisms that can cause diseases that can not only infect pets but people, as well," says Dez Young, host of the award-winning series Hunting with Hank, televised on VERSUS network. "Make sure that a flea, tick and mosquito treatment is part of your dog's monthly maintenance, every month. I use Bayer's K9 Advantix on Dash. K9 Advantix gives me peace of mind when I take Dash into the field because I know he'll be protected from the most common external parasites wherever we go -- in all climates, on all terrain, and in every season."

E.P.A.-accepted label claims indicate that K9 Advantix remains effective after bathing and swimming, and it offers the repellency against all three parasites--fleas, ticks, and mosquitoes that Frontline Plus does not.

Bayer's Animal Health Division has long provided veterinarians, breeders, and dog owners with products that enhance and ensure the life and health of their dogs. K9 Advantix, like all Bayer Animal Health products, is available through veterinarians. For more information, please visit www.K9advantix.com.

About Bayer Animal Health

Bayer HealthCare's Animal Health Division is the maker of Advantage([R]) flea control for cats and dogs and K9 Advantix([R]), a flea, tick, and mosquito control product for dogs only. The division is a worldwide leader in parasite control and prescription pharmaceuticals for dogs, cats, horses, cattle, and poultry. North American operations for the Animal Health Division are headquartered in Shawnee, Kan. Bayer Animal Health is a division of Bayer HealthCare LLC, one of the world's leading health care companies.

About Bayer HealthCare

Bayer HealthCare, a subsidiary of Bayer AG, is one of the world's leading, innovative companies in the healthcare and medical products industry and is based in Leverkusen, Germany. Bayer HealthCare generated sales amounting to some 9.4 billion euros and employed 33,800 people worldwide in 2005.

The company combines the global activities of the Animal Health, Consumer Care, Diabetes Care, and Pharmaceuticals divisions. The new Pharmaceuticals division was established on January 1, 2006, and comprises the former Biological Products and Pharmaceutical divisions. Pharmaceuticals now have three business units: Hematology/Cardiology, Oncology, and Primary Care. Bayer HealthCare's aim is to discover and manufacture products that will improve human and animal health worldwide. The products enhance well-being and quality of life by diagnosing, preventing and treating diseases.

Forward-looking Statements

This news release contains forward-looking statements based on current assumptions and forecasts made by Bayer Group management. Various known and unknown risks, uncertainties, and other factors could lead to material differences between the actual future results, financial situation, development, or performance of the company and the estimates given here. These factors include those discussed in our public reports filed with the Frankfurt Stock Exchange and the U.S. Securities and Exchange Commission (including our Form 20-F). The company assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments.

1http://www.cdc.gov/ncidod/diseases/insects/special_topics.htm

(c) 2007 Bayer HealthCare LLC, Animal Health Division, Shawnee Mission, Kansas, 66201

Bayer, the Bayer Cross, Advantage and K9 Advantix are trademarks of Bayer. Frontline is a trademark of Merial