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A legacy of health innovation for people and the pets they love.

Just like you, Bayer is committed to health and happiness for pets. A lot has changed over the last 150 years, including the evolution of the relationships we enjoy with our pets. But, the belief that cats and dogs deserve healthy, comfortable and happy lives has guided Bayer along the way.

Our History

By Year
Bayer Corporate
Bayer Animal Health
  • 1863
    Friedrich Bayer, founder of Bayer AG
    Bayer AG is founded by Friedrich Bayer in Elberfield, Germany.
  • 1897
    Bayer scientist Dr. Felix Hoffman
    Bayer scientist Dr. Felix Hoffman succeeds in synthesizing a chemically pure and stable form of acetylsalicylic acid, the active ingredient of what would soon become Aspirin®.
  • 1899
    Aspirin registered as a trademark
    Aspirin is registered as a trademark, and the analgesic hits the market to become a staple on the shelves of families across the world.
  • 1904
    Bayer employee Hans Schneider, known for his creative and innovative work, creates the Bayer Cross Logo.
    Original Bayer cross logo
  • 1919
    Cats and dogs begin moving into the house. This is why Bayer launched Neguvon flea and tick product, its first specific animal health product.
    Bayer launches Neguvon flea and tick
  • 1923
    Bayer launches Naganol, the first veterinary product to combat blood parasites in animals.
    1923 Naganol logo
  • 1928
    The Bayer Cross logo is given a new and now familiar form.
    1928 Bayer Cross logo
  • 1948
    Bayer develops the first vaccine against foot-and-mouth disease.
  • 1968
    Bolfo, a product to protect small animals against fleas and ticks, is launched.
    1968 Bolfo flea and tick products from Bayer
  • 1974
    Bayer merges Cutter-Haver-Lockhart with Chemagro, a Kansas City-based agricultural chemical company, and names it Bayvet – short for Bayer Veterinary.
  • 1988
    Bayer introduces the first in class fluoroquinolone antibiotic for dogs and cats with the introduction of Baytril® (enrofloxacin) Antibacterial Tablets.
    Baytril Antibacterial Tablets & Injectable Solution logo
  • 1989
    The Bayer Cross logotype and new corporate colors green and blue are added to the logo, and the company begins to utilize the Bayer name for all veterinary medicine and veterinary supply products on the market in the U.S.
    1989 Bayer Cross logo
  • 1993
    Drontal® (praziquantel/pyrantel pamoate) Tablets for cats, a broad-spectrum dewormer, launches in 1993. In 1994, Drontal® Plus (praziquantel/pyrantel pamoate/febantel) Tablets broad-spectrum dewormer for dogs launches. Both are still on the market today.
  • 1996
    Bayer launches Advantage®, a breakthrough product in flea treatment, then formulated Advantage® II in 2011 with pyriproxfen added to more comprehensively target infestations and interrupt the flea life cycle at multiple stages. A family of Advantage® home and yard products completes the Advantage® line today.
  • 2002
    2002 Bayer Cross logo
    Bayer Cross becomes three-dimensional and incorporates the company’s colors.

     

    Bayer launches K9 Advantix® with protection from fleas, ticks mosquitoes. In 2011, Bayer launches K9 Advantix® II, a market-leading product with an additional active ingredient to also kill all flea life stages.
    Do not use on cats.
  • 2007
    Advantage Multi® (imidacloprid + moxidectin) is introduced to the U.S. market to provide broad-spectrum protection against heartworm disease, fleas and common intestinal parasites for dogs and cats.

     

    Bayer unveils Profender® (emodepside/praziquantel) Topical Solution, a deworming agent for cats.
    Profender dewormer for cats unveiled in 2007
  • 2013
    Bayer reaches a new milestone with the launch of Seresto®, a collar designed with Sustained-Release Technology. It’s the first pet product to leverage research and development innovation across the HealthCare, Crop Science and Material Science divisions to prevent fleas and ticks on dogs or cats for 8 months.

     

    Veraflox Oral Suspension for Cats introduced in 2013
    An innovative antibiotic, Veraflox® (pradofloxacin) Oral Suspension for Cats, designed specifically for the needs of cats is introduced.

     

    Bayer acquires Teva Animal Health to create Bayer DVM
    Bayer acquires Teva Animal Health in the continuation of efforts that further strengthen and broaden the range of pet care solutions in the U.S. Bayer now offers a full line of dermatology products, nutraceuticals, gastrointestinal products, anti-infectives and anti-inflammatories.

     

    Bayer celebrates its 150-year anniversary.
    Bayer 150-year anniversary logo
  • 2014
    Bayer introduces quellin® (carprofen), the first soft chewable non-steroidal anti-inflammatory drug (NSAID) available for dogs.
    quellin introduced in 2014
  • 2015
    Bayer launches Zelnate®, a novel, non-antibiotic technology and first-of-its-kind immunostimulant. Zelnate® effectively reduces mortality and lung lesions associated with bovine respiratory disease (BRD) due to Mannheimia haemolytica, potentially reducing the need for antibiotics.
    Seresto® for large dogs packaging

     

    Bayer launches Claro® (florfenicol, terbinafine, mometasone furoate) Otic Solution, the only FDA-approved, vet-administered, single-dose treatment regimen for canine otitis externa.
    Claro® (florfenicol, terbinafine, mometasone furoate) Otic Solution
  •  

Do not use K9 Advantix® on cats.

Advantage Multi® for Cats (imidacloprid + moxidectin)
CAUTION: Federal (U.S.A.) law restricts Advantage Multi® for Cats (imidacloprid + moxidectin) to use by or on the order of a licensed veterinarian. WARNINGS: Do not use on sick or debilitated cats or ferrets. Do not use on underweight cats. (see ADVERSE REACTIONS). Do not use on cats less than 9 weeks of age or less than 2 lbs body weight. Do not use on ferrets less than 2 lbs body weight. PRECAUTIONS: Avoid oral ingestion. HUMAN WARNINGS: Children should not come in contact with the application site for 30 minutes after application.

Advantage Multi® for Dogs (imidacloprid + moxidectin)
CAUTION: Federal (U.S.A.) law restricts this drug to use by or on the order of a licensed veterinarian. WARNING: DO NOT ADMINISTER THIS PRODUCT ORALLY. For the first 30 minutes after application ensure that dogs cannot lick the product from application sites on themselves or other treated animals. Children should not come in contact with the application sites for two (2) hours after application. (See Contraindications, Warnings, Human Warnings, and Adverse Reactions, for more information.) CONTRAINDICATIONS: Do not use this product on cats.

Baytril® Otic (enrofloxacin/silver sulfadiazine) Emulsion
CAUTION: Federal (U.S.A.) law restricts this drug to use by or on the order of a licensed veterinarian. Federal Law prohibits the extra label use of this drug in food-producing animals. CONTRAINDICATIONS: Baytril® Otic is contraindicated in dogs with suspected or known hypersensitivity to quinolones and/or sulfonamides.

Baytril® (enrofloxacin) Antibacterial Tablets
CAUTION: Federal (U.S.A.) law restricts this drug to use by or on the order of a licensed veterinarian. Federal law prohibits the extra label use of this drug in food-producing animals. CONTRAINDICATIONS: Enrofloxacin is contraindicated in dogs and cats known to be hypersensitive to quinolones. The safe use of enrofloxacin has not been established in large and giant breeds during the rapid growth phase. The use of enrofloxacin is contraindicated in small and medium breed dogs during the rapid growth phase (between 2 and 8 months of age). WARNINGS: For use in animals only. The use of this product in cats may result in Retinal Toxicity. Keep out of reach of children.

Baytril® (enrofloxacin) Injectable Solution 2.27% For Dogs Only
CAUTION: Federal (U.S.A.) law restricts this drug to use by or on the order of a licensed veterinarian. Federal law prohibits the extra label use of this drug in food-producing animals. CONTRAINDICATIONS: Enrofloxacin is contraindicated in dogs known to be hypersensitive to quinolones. The safe use of enrofloxacin has not been established in large and giant breeds during the rapid growth phase. The use of enrofloxacin is contraindicated in small and medium breed dogs during the rapid growth phase (between 2 and 8 months of age). WARNINGS: For use in animals only. The use of this product in cats may result in Retinal Toxicity. Keep out of reach of children.

Claro® (florfenicol, terbinafine, mometasone furoate) Otic Solution
CAUTION: Federal (U.S.A.) law restricts this drug to use by or on the order of a licensed veterinarian. CONTRAINDICATIONS: Do not use in dogs with known tympanic membrane perforation (see PRECAUTIONS on label). Claro® is contraindicated in dogs with known or suspected hypersensitivity to florfenicol, terbinafine hydrochloride, or mometasone furoate.  PRECAUTIONS: Use of topical otic corticosteroids has been associated with adrenocortical suppression and iatrogenic hyperadrenocorticism in dogs (see ANIMAL SAFETY on label). Use with caution in dogs with impaired hepatic function (see ANIMAL SAFETY on label).

Drontal® (praziquantel/pyrantel pamoate) Tablets
DOSAGE: Not for use in kittens less than two months of age or weighing less than 2 lbs. WARNING: Keep out of reach of children. Consult your veterinarian before administering to sick or pregnant animals.

Drontal® Plus (praziquantel/pyrantel pamoate/febantel) Tablets
CAUTION: Federal law (U.S.A.) restricts this drug to use by or on the order of a licensed veterinarian. DOSAGE: Not for use in puppies less than 3 weeks of age or weighing less than 2 lbs. CONTRAINDICATIONS: The effects of Drontal® Plus on pregnant animals have not been determined.

Profender® (emodepside/praziquantel) Topical Solution
CAUTION: Federal law (U.S.A.) restricts this drug to use by or on the order of a licensed veterinarian. HUMAN WARNINGS: Children should not contact application site for twenty-four (24) hours.

quellin® (carprofen) soft chews
CAUTION: Federal law restricts this drug to use by or on the order of a licensed veterinarian. WARNINGS: Keep out of reach of children. Not for human use. Consult a physician in cases of accidental ingestion by humans. For use in dogs only. Do not use in cats. All dogs should undergo a thorough history and physical examination before initiation of NSAID therapy. Appropriate laboratory tests to establish hematological and serum biochemical baseline data prior to, and periodically during, administration of any NSAID should be considered.

Veraflox® (pradofloxacin) Oral Suspension for Cats
CAUTION: Federal law restricts this drug to use by or on the order of a licensed veterinarian. Federal law prohibits the extra label use of this drug in food-producing animals. CONTRAINDICATIONS: Do not use in dogs. Pradofloxacin has been shown to cause bone marrow suppression in dogs. Pradofloxacin is contraindicated in cats with a known hypersensitivity to quinolones. WARNINGS: Not for human use. Keep out of reach of children. For use in cats only. The administration of pradofloxacin for longer than 7 days induced reversible leukocyte, neutrophil, and lymphocyte decreases in healthy, 12-week-old kittens. PRECAUTIONS: The use of fluoroquinolones in cats has been associated with retinopathy or blindness. Such products should be used with caution in cats. Refer to the product label for a more complete list of risks and precautions.

Baytril, Drontal, Advantage, K9 Advantix, Advantage Multi, Profender, Seresto, quellin, Zelnate, Claro, Veraflox, DVM, and DVM & Design are registered trademarks of Bayer.