Excellent and Comprehensive Behavior Care Based on Your Cat's Feline Evolutionary Biology.

Schedule with Veterinarian and Oxford-trained Certified Cat Behaviorist and New York Times Acclaimed Feline Behavior Science Author on National Geographic

URINATION AND DEFECATION CASES MAY QUALIFY FOR A REDUCED CONSULT FEE FOR BEHAVIOR STUDY PARTICIPATION. Virtual Consultations by Video, Phone, or In-person. 274 Testimonials and Solved Feline Case Studies.


For Over Two Decades Solving Thousands of Cat Urination, Defecation, Marking and Aggression Issues in Over 30 Countries. The Clinic Scientifically Observes and Analyzes Cat Behavior from a Behavioral Cognitive, Ethological, and Feline Evolutionary Point of View.

OXFORD UNIVERSITY was Mieshelle Nagleschneider's most recent study of animal behavior. She is the founder of the first cat-only behavior clinic practice in the United States. Her other animal behavior studies include cat behavior specifically through the University of Edinburgh (Royal School of Veterinary Studies). You can learn more about her other animal studies including Harvard University on our Animal Behavior Study Page.

Mieshelle is a cat behaviorist for National Geographic television shows and published works and you can also watch her on the Today Show, Hallmark Channel, NBC Dateline, and MTV. Since 1999, her in-depth applied scientific analysis of the behavior and evolutionary biology of the cat has enabled her to help thousands of cat owners over two decades and in 30 different countries, solve their cat's behavior issues.

She is the award-winning international author of New York Times acclaimed feline behavior science book published in 4 languages by Random House Publishing and a long time cat behavior expert for National Geographic documentaries and published works on cat behavior and the 37 species of wildcats including the domestic cat and wildcat hybrids.

Mieshelle coined the term and was the first "Cat Behaviorist" and "Feline Behavioral Scientist" in the United States and is the recipient of the Golden Purr Award for her contribution to cat behavior. Our Veterinarian Dr. Jim Shultz performs local in-home consultations also.

To achieve behavior results that are lasting, it’s necessary to work with an experienced cat behaviorist, but most importantly, one with formal university study in animal behavior that can apply the sciences of gene-encoded behavior, animal psychology, feline evolutionary biology and physiology, to effectively correct a cat’s behavior.

Mieshelle travels the globe from Australia to the Philippines lecturing at the international level to veterinarians and shelter workers to help them better help cat owners for over two decades solving “unfixable” behavior issues. She goes beyond the obvious facts about cat behavior and offers intelligent and proven solutions. Cat owners receive systematic behavior plans and guidance based on feline evolutionary biology. She is world-renowned for her global leadership in cat behavior education and crossing the conventional boundaries of the cat behavior specialty.

Cats are still the most misunderstood companion animal that are at the greatest risk. The hundreds of vets that the clinic works with and who refer cats to us often say, as will vet behaviorists, "we still don't know what to do with cats". Dr. Jordan Carlton Schaul, Ph.D., contributing editor, National Geographic, and past curator, Orange County Zoo “The reason people are so mesmerized by house cats is because they are truly miniature versions of lions, tigers, and leopards. In her book, 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.”
READ ABOUT: Dr. Jim Shultz DVM and Mieshelle's Education, Acclaimed Feline Behaviorial Science Books, Lectures, Media, Spokesperson, and Welfarist International Work.

Hundreds of Cat Behaviorist Solved Case Studies and Testimonials Since 1999

  • Lexi has gone poop in the litter box 4 times in a row! This is the first poop that wasn’t covered in litter so I took a pic of it. She’s been doing very well this week!

    Cat Behavior Testimonial Mieshelle Kate M. Melbourne, Florida
  • I had a great experience working with Mieshelle solving our cat's urinating issues. She was clear and concise and most importantly solved an ongoing urination issue of several years within the first two weeks. I'm so glad that I worked with her and would definitely recommend her to anyone!

    Susan B. NYC
  • 2019 Urine Case Study Success Update: “Hello Mieshelle, Just wanted to follow up that Doolittle is now pee free for more than a month. He (behavior advice removed). The other cats (behavior advice removed) as you said no one was (behavior advice removed). From day one they stopped (behavior advice removed)”.

    Cat Behavior Testimonial Mieshelle Angela D. Bradenton, Florida

Cat Behaviorist Feline Issues Solved by the Clinic Throughout the United States. The Doctor and Cat Behaviorist are scheduling through October 31st.

LIFE Magazine and the History of Cats and Their Behavior with Feline Behavioral Scientist Mieshelle Nagelschneider

Cat Behaviorist for Life Magazine Mieshelle Nagelschneider Interview

Mieshelle as Certified Cat Behavior Expert for National Geographic

You can also watch Mieshelle on National Geographic’s Animals Doing Things with Howie Mandel as their cat expert and other cat behavior documentaries by Nat Geo Wild.  As a cat behavior science author she is also the cat expert for several of National Geographic’s published works on the 37 species of wildcats, tigers, and every breed of the domestic house cat including wildcat hybrids.

She is known for her global leadership in cat behavior education. Her passion and curiosity about cats along with her formal study in animal behavior, continues to put her on the forefront of cat behavior knowledge crossing the conventional boundaries of the cat behavior specialty. 

Five-star Yelp Review Cat Behaviorist Mieshelle Nagelschneider      Darrel P.  Germantown, Tennessee

Our Cat Behaviorist’s Practice Areas include the Entire United States and Over Thirty Countries:  We Have a Large Client Base in Texas, California, New York (NYC), New Jersey, Florida, North Carolina, Virginia, Michigan, Ohio, Illinois, Seattle WA, Pennsylvania, and even Switzerland.

The Cat Whisperer

Watch The Cat Whisperer™ on the Today Show

Award-winning Cat Behaviorist and Cat Whisperer™ Mieshelle Nagelschneider – Renowned Feline Science Random House Author and Pioneer of The Cat Behavior Specialty Since 1999.

Cat Whisperer and Cat Behaviorist MieshelleHallmark Channel Home & Family Show 2017 Mieshelle (center) Talking Cat Behavior Issues with Host and Susan Lucci

Where Are All the Cat Behaviorists?

There are still only a handful of certified cat behaviorists as compared to dogs trainers and veterinary behaviorists.  Cats are still very underserved.  With over 40,000 hours of conducting feline consultations, Mieshelle is considered the pioneer of the cat behavior specialty and one of three notable cats exclusively behaviorists in the United States. The clinic has over 274 solved case studies and client testimonials and has been helping cat owners have problem-free cats since 1999.  We have clients all across the United States in New York, Florida, Illinois, California, New Jersey, Texas, Massachusetts, Pennsylvania, Michigan, Ohio, Arizona, (just to name a few) and in over 30 countries around the world. 

Read more about Mieshelle’s past animal behavior studies through Oxford University, The University of Edinburgh – The Royal School of Veterinary Studies, and her study and experience at Harvard University. We also have a licensed veterinarian, Dr. Jim Shultz,  that we refer for specific local cases only.

About Cat Behaviorist
Dr. Jim Shultz with a furry patient.

Without a behavior plan that’s carefully created drawing from current research on cat behavior to appropriately address all the critical components and factors of a presenting behavior, is like trying to conduct a symphony without sight or sound. Behavior plans that completely eliminate a cat behavior issue are not one-size-fits-all. 

After your consultation should any changes or additions need applied to your cat’s behavior plan, we are here for additional correspondence. Cats are not all the same and can respond differently to various techniques and a behavior plan should respond and reflect your cat’s uniqueness.

Mieshelle Nagelschneider Provides Trusted and Proven Behavior Solutions and is the Author and Cat Expert of Several Cat Behavior Books

Cat Behaviorist Cat Whisperer Mieshelle Nagelschneider

“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

The Cat Whisperer book
Mieshelle’s book, The Cat Whisperer, is also published in German and Polish (Arkana Publishing and Random House).
The Cat Whisperer Book by Mieshelle Nagelschneider
Mieshelle’s cat behavior science book, The Cat Whisperer, is also published in Hungarian (Jaffa Publishing).
Cat Behaviorist Book Mieshelle Nagelschneider for National Geographic
With the help of veterinarian Dr. Gary Weitzman and cat behaviorist Mieshelle Nagelschneider, kids will learn how understand their cat’s behavior.  You can also watch Cat Behavior Expert Mieshelle on National Geographic Cat Documentaries and Cat Related Shows.

Image result for cat behaviorist mieshelle book foreword

Proven Cat Behaviorist Solutions

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 required curriculum by a number of cat behaviorist certifying organizations.  Mieshelle is a long time member of the Animal Behavior Society, and Cat Behavior Counselors (certified), and the Association of Animal Behavior Professionals.

Recipient of the Golden Purr Award for her contribution to cat behavior knowledge.

Mieshelle The Cat Whisperer™ is the spokesperson and cat behavior panel expert for Comfort Zone and Arm & Hammer Cat Litter and in the past for Whiska’s International Media Tour Australia. Her cat behavior expertise has been seen in the New York Times, The Today Show, NBC Dateline, MTV, Animal Planet, National Geographic, 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.

What Our Colleagues Say About Cat Whisperer™ and Feline Expert, Mieshelle Nagelschneider: 

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

“Literally our problem seems to be solved ‘overnight’ and we are very optimistic that this will stay: we even see her using the cat litter box; she buries her urine, and seems to be very comfortable. This is unbelievable, Mieshelle. We are very thankful for your precious help and knowledge.” – Best regards, Andrea & David M. Chicago, Illinois

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.  Oftentimes, cat behaviors are severely misunderstood.  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.

Does a Cat Behaviorist Need to Come to My Home?

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

The Original Cat Whisperer™ Mieshelle Nagelschneider in Media, Articles, and Interviews:

Call The Clinic Today at 503-267-8888