33 years in practice and founders of the cat behaviorist specialty

Phi zeta

Harvard and oxford-trained Cat Behaviorist & licensed veterinarian team

33 Years in Practice Harvard and Oxford-trained Cat Behaviorist and Phi Zeta Veterinarian Team Specialize in the Scientific Research and Management of Chronic, Complex, and Severe Cat Behavior Issues

Mieshelle Nagelschneider on the Today Show holding a cat | Mieshelle Nagelschneider | Cat Behaviorist |

Schedule a Zoom Appointment Online Below

Zoom Appointment Update: schedule with our licensed veterinarian and cat behaviorist team through July 31st. Through June 30th receive the study participation reduced fee for urination or defecation appointments. Scheduled clients can participate in Mieshelle’s 2-time Academy award-winning cat behavior science show, My Cat from Hell, on Discovery Plus with over 1 billion viewers the most watched cat behavior show in the world.

Mieshelle’s New York Times Acclaimed Cat Behavior Science Book is Required
Curriculum to Certify Other Cat Experts You See Online Today.

Feline Cognitive Rescue Program™ – 33 Years of Clinical Expertise for Complex, Chronic, or Severe Behavior Cases

Mieshelle standing with My Cat from Hell 2 TV Show advertisement | Mieshelle Nagelschneider | Cat Behaviorist |

One of Our Doctors and Cat Behaviorists: Recipient of the “Golden Purr” Award, Myfoodie Award, and Outstanding Cat Behavior Profession Award 2020, and Dedicated to the Scientific Research of Cat Behavior: Our Cat Behavior Science Book is Used to Certify Other Cat Experts You See Today and for Entrance Exams to Colleges and Universities. We Have More Cat Owners Purring Than Anyone in Over 30 Countries 350 Client Testimonial

Schedule a Zoom Appointment Online Below or Contact the Clinic at 503-267-8888:


Appointments are conducted 7 days a week. We offer same day or same week appointments worldwide.

If not scheduling online, contact


Scheduling Step One: Choose Your Behavior Wellness Program

$450.00 Comprehensive Feline Cognition Behavior Wellness Appointment Program – 8 weeks/4 appointments

$325.00 Urination and Defecation Feline Cognition Behavior Wellness Program – 4 weeks/3 appointments

  • Urination and/or defecation consults only (not vertical urine spray-marking) for single cat or multiple cats.  Participate in our study helping cats just like yours with urination or defecation issues and receive the reduced consult fee of 325.00 through June 30th. If no one volunteered to participate in our urination/defecation studies, there would be no treatment options for you. Cat owners who were frustrated with litter box issues helped our research team develop effective therapies for over 3 decades for cats (and other cat experts you see today). To be eligible, your cat(s) must be spayed/neutered and you must not have participated in the study before. In lieu of Paypal, you are welcome to schedule by contacting the clinic at: 503-267-8888.
  • 3 appointments included. The initial behavior appointment lasts approximately 1 to 1 1/2 hours. Included are 2 additional appointments during the 4 week program evaluation period.  Two week extensions may be granted for specific cases.
  • All behavior cases are fully evaluated by our licensed doctors and cat behaviorist team. Receive a comprehensive behavior analysis and tailored behavior plan during the first appointment.  Behavior plans include behavior strategies based on the most recent cat behavior scientific research studies including the clinic’s 33 years of feline behavior data.
  • 4 week program time includes ongoing weekly observation, analysis, and behavior plan progression recommendations during your scheduled follow-up appointments.  Appointments are scheduled 7 days a week.
  • Dietary guidance a part of all appointments: Mieshelle is the newly appointed cat nutrition research and development expert for the largest cat food company and manufacturer in the world. Proper diet is the cornerstone for a cat to thrive behaviorally.
  • Read over 350 client testimonials

Zoom Video Call FAQ’S

Image of a Couple in front if a TV with Mieshelle Nagelschneider | Cat Behaviorist
Photo: Actual Zoom Appointment in Beijing, China 2021. Mieshelle’s 2-time Academy Award-winning Show, My Cat From Hell, for Discovery Plus Channel has over 1 Billion Viewers Internationally.  Founder of The Cat Behavior Clinic, Cat Behaviorist Mieshelle Nagelschneider is the first and only cat behaviorist in China and in over 30 Countries.

How Do I check-in for my Zoom Appointment?

The clinic will call you by phone at your scheduled appointment time and then move to Zoom video.  A link will be emailed to you ahead of time to enter the Zoom waiting room.  If you are an international client outside of the U.S. we will meet you in the Zoom room at your appointment time.

Do I need a Zoom account to do a video visit?

No.  Just download the free app on your phone or computer ahead of time.

Please familiarize yourself with our Clinic Policies including cancellation, rescheduling and refund policies here.

In-Person Consultations

Is Your Cat a Good Candidate for a Behavior Consultation?

Probably, but this is our clinic efficacy guarantee policy: we know you are loving cat owners wanting the best for your cats and we are here to offer our guidance and expertise.  If after the clinic evaluates your completed feline behavior history form it’s determined a consultation would not be appropriate or effective for your cat(s), the clinic will refund your paid appointment fee. In some cases, we may offer a free appointment.

Mieshelle is a New York Times Acclaimed Cat Behavior Science Author Published in 4 Languages (Random House Publishing w/co-writer Cameron Powell and National Geographic).

Mieshelle is the Scientific Dietary Cat Nutrition and Research Expert for the Largest Cat Food Company and Manufacturer in the World as Well as Their Cat Welfarist Creating Humane Cat Welfare Guidelines.

Licensed Doctors and Cat Behaviorist Team and Founders of the Cat Behaviorist Specialty. Mieshelle is also the new host of 2-time Academy award-winning cat behavior television show “My Cat from Hell” on Discovery Plus Asia the most watched cat show in the world with over 1 billion viewers. Her scholarly cited cat behavior science book is published in 4 languages (Random House Publishing).

Mieshelle Nagelschneider on the Hallmark Channel's Home & Family Show | Mieshelle Nagelschneider | Cat Behaviorist |

In-person appointments are conducted in your home by Mieshelle and/or our veterinarians who also performs consultations vet-to-vet remotely or in-person in select states where they are licensed.  Mieshelle has traveled to Japan, Australia, China, and the Philippines for in-person consultations! Please contact the clinic directly if you would like to learn more about in-person appointments.

All Three Cat Behavior Books The Cat Whisperer Mieshelle Nagelschneider | Cat Behaviorist

Gene-encoded Cat Behavior: It Matters For Lasting Success for Cat Behavior Issues

To achieve lasting results, it’s necessary to work with an experienced cat behaviorist, but most importantly, one with formal study in animal psychology and behavior. The ability to apply the sciences of genetics, animal psychology, biology, physiology, and feline learning and memory is needed to effectively correct a cat’s behavior.  The clinic solves cat behavior issues by scientifically observing and analyzing your cat’s behavior.  As pioneers of the “Cat Behaviorist” specialty and the first cat-only behavior practice in the United States we have helped thousands of cat owners in over 30 countries by phone, video, or in-person.

What’s the Latest with Mieshelle and National Geographic and Discovery Plus?

Mieshelle is the new host of My Cat from Hell on Discovery Plus which just won 2 Academy Awards and has 1 billion viewers since she has hosted the show. As an award-winning cat behavior science author published by Random House, she also works behind the scenes as the cat behavior expert for numerous National Geographic published works on the 37 species of wildcats, tigers, and every breed of the domestic house cat as well as cat and tiger television documentaries.  Watch Mieshelle on National Geographic’s Animals Doing Things with Howie Mandel as their cat behaviorist and other cat behavior documentaries by Nat Geo Wild.

The Science Behind Successfully Solving Cat Behavior Issues

Our cat behavior program provides a comprehensive treatment approach incorporating a behavioral cognitive, ethological, and feline evolutionary point of view. Understanding how behavior is actually measured and how scientific studies are conducted and reported is crucial before taking the steps involved in designing and carrying out a behavior plan to change a cat’s behavior. The benefits of working with a cat behaviorist who really understands the latest in feline behavior can literally last you for years. (Like driving lessons, typing lessons, or a parenting class). A consultation with Mieshelle is nothing less than an investment towards a happier and problem-free cat — and toward your sanity. The advice, knowledge, and tools you’ll get during and after your consultation, as well as the traps (and products) to avoid, will repay you many times over.

“The reason people are so mesmerized by house cats is because they are truly miniature versions of lions, tigers, and leopards. In her book The Cat Whisperer, Mieshelle Nagelschneider explains the behavior of the house cat in an unprecedented and most accessible way, offering unique insight into the often misunderstood companion animal that is as wild as we have become civilized.”—Jordan Carlton Schaul, Ph.D., contributing editor, National Geographic, and curator, Orange County Zoo

Macskakkal Suttogo Magazine Cover Photo | Mieshelle Nagelschneider | Cat Behaviorist

Latest for National Geographic: With the help of veterinarian Dr. Gary Weitzman and cat behaviorist Mieshelle Nagelschneider, kids will learn how to understand their cat’s behavior.

Two Women and a Man with Two Cats 3 | Mieshelle Nagelschneider | Cat Behaviorist

Mieshelle’s Internationally Published Books and National Geographic Works

The Cat Whisperer Book Cover | Mieshelle Nagelschneider | Cat Behaviorist

Award-winning, Random House Publishing, The Cat Whisperer. Acclaimed New York Times Feline Science Author and the First Scholarly-cited Cat Behavior Book for Cat Owners

Tipps Von Der Katzen Flusterin | Mieshelle Nagelschneider | Cat Behaviorist

Mieshelle’s cat behavior science book, The Cat Whisperer, is also published in Hungarian (Jaffa Publishing).

Cat Tales Cover with Grey Cat | National Geographic | Mieshelle Nagelschneider | Cat Behaviorist

Mieshelle’s book, The Cat Whisperer, is also published in German and Polish (Arkana Publishing and Random House).

Mieshelle Nagelschneider with a two Kittens and a Little Girl and a Veterinarian 7 | Mieshelle Nagelschneider | Cat Behaviorist

Mieshelle’s International Arm & Hammer Litter Cat Behavior Media Tour – Parent Magazine Live in Toronto, Canada – Preventing Feline Behavior Issues.  Mieshelle goes beyond the obvious behavior strategies and facts during the behavior consultation program with comprehensive behavior plans based on scientific research behavior studies of felids, your cat’s feline evolutionary biology, innate learning styles and memory, and current external and internal factors affecting your cat.  Our outstanding 95% clinic success rate. 

The value you receive goes well beyond the cat issue you have today. Because we truly educate our clients on how cats act and behave — and especially how their behavior is totally different from the dogs that most people unconsciously use as models — our clients are able to more knowledgeably raise and enjoy cats for as long as they have cats.

Read over 350 solved case studies and client testimonials

World-renowned Oxford-trained Cat Behaviorist Mieshelle Nagelschneider, The Cat Whisperer™️

What People Are Saying

Frequently Asked Questions

All cat behavior solutions must take into consideration feline instincts and their evolutionary biology. The clinic has exclusive rights to Mieshelle Nagelschneider’s proprietary Cat Whisperer™ consulting, easy-to-implement C.A.T. Plan™ positive behavior modification, the most effective, comprehensive, and up-to-date system for curing any cat behavior problem.

Because every cat and environment is different, the plan allows for customized behavior techniques and environmental changes when needed – because cat behavior is not one-size-fits-all. Mieshelle has spent 20 years developing a method so effective that when clients follow it, their success rate is well over 90% (even higher for the most common issues).

Her science-based cat behavior book, The Cat Whisperer, has been featured in the New York Times and a best-seller on Amazon and published in 4 languages (Random House Publishing with co-writer Cameron Powell).

For cat behaviorists seeking certification, her book is a required curriculum by a number of cat behaviorist certifying organizations.

Love is born of mystery, and our cats are mysterious and loved in equal measure. But sometimes the greatest blessing of all is a bit of light thrown into a dark place. Mieshelle Nagelschneider holds that light. Allow her to share it with you.”– Gwen Cooper Author, Homer’s Odyssey: A Fearless Feline Tale, of Life With a Blind Wonder Cat (Random House), New York, NY

Veterinarian: “Over the course of many years, Mieshelle has developed and refined her unique ability to think like a cat. On numerous occasions I have witnessed the life-changing benefits Mieshelle’s techniques can bring to cats and their sometimes very frustrated owners.” – Veterinarian, Dr. James R. Shultz DVM, Portland, Oregon

Cat Behavior Veterinarian Referral from Dr. Lisa Berger DVM: “Despite all the disruptions, there have been no incidents of urination on the bed or the couch, and neither have been covered by plastic all week!” – Juanita H. Portland, Oregon

You have the African wildcat, your domestic cat’s ancestor, to thank for many of your cat’s “unwanted” cat behaviors. Learn more about this during your consultation to better understand and help your cat and solve its behavior issues. We often misunderstand cat behaviors. Once cat owners understand their cat instincts and biology, they can better understand why the behavior strategies work so well and can better apply them.

Mieshelle The Cat Whisperer™ has been the spokesperson and cat behavior expert for Comfort Zone, Arm & Hammer Cat Litter, and Cat Expert for Whiska’s International Media Tour Australia. Her cat behavior expertise is seen in the New York Times, The Today Show, NBC Dateline, MTV, Animal Planet, National Geographic, Discovery Channel, The Hallmark Channel, Modern Cat Magazine, Parade, Reader’s Digest, Cat Fancy Magazine, The New York Post, The Boston Globe, USA Today, This Wild Life, The Divine Cat, Real Simple Magazine,, Petside, Freekibblekat, The Toronto Star, Canada Globe and Mail, Animal Rescue Site, The Daily Cat, Feline Wellness Magazine, Advisory Council, This Wild Life, The Cat Channel, Pets Magazine, The Circle, New Republic, The Sunrise Show,, Herald Sun, Toronto Star, and countless others. See our Media Room below for the latest.

Feline behavior therapy is very different from canine behavior therapy and the approach to changing a cat’s behavior is even more unique. Cats do not display obedience problems like dogs. The help you need is not focused on physical or verbal behavior modification strategies, like dog training with a dog trainer present. All cat behaviorists conduct consultations by phone or video via Skype. Our behavior plans are specific to cats and still allow for the natural feline instincts, but when and where you want them displayed. We will cover the behavior plan during the phone or video consultation and offer follow-up over the course of several weeks for all of our consultation programs.

Call The Clinic Today at 503-267-8888