At the End of Your Ball of Twine? Schedule with Award-winning, Harvard-trained, Certified Cat Behaviorist and Author, Mieshelle Nagelschneider.  

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Watch for Mieshelle on National Geographic, "Wild Side of Cats"!

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Veterinarian Dr. Jim Shultz -- our other cat behaviorist here at the clinic

Dr. Shultz
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Mieshelle guest starred as the Cat Whisperer on Animal Planet's Must Love Cats!

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Welcome to the Cat Behavior Clinic: Harvard Cat Behaviorist at Your Fingertips.  Schedule a Phone or Real Time Video Consultation with Certified Cat Behaviorist, Behavior Author, and Lecturer, Mieshelle Nagelschneider, CCBC.

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Since 1999, Harvard-trained, Certified Cat Behaviorist Mieshelle Nagelschneider, The Cat Whisperer ®, and Dr. James Shultz, have provided cat owners and veterinarians behavior plans based on feline evolutionary.

Non-cookie Cutter Advice:  She has been helping cat owners for over two decades solving “unfixable” behavior issues, by going beyond the obvious facts about cat behavior and offering intelligent solutions to solve your cat’s behavior issues. Her most recent study of animal behavior was at Harvard University and she is world-renowned for her global leadership in cat behavior education and crossing the conventional boundaries of the cat behaviorist specialty.

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Mieshelle’s cat behavior knowledge has been published nationally and internationally.  Her book is the only cat behavior book that is scholarly-cited for cat owners (published in 4 languages by Random House Publishing). Cat Behaviorist Mieshelle is also seen in the New York Times, The Today Show, Nat Geo Wild, National Geographic, Animal Planet, NBC Dateline, Hallmark Channel, Arm & Hammer, Animal Rescue Site, Free Kibble Kat,, Martha Stewart Radio, USA Today, Real Simple Magazine, Cat Fancy Magazine, Feline Wellness Magazine, Advisory Council, This Wild Life, Divine Cat, The Cat Channel, Modern Cat magazine, Pets Magazine, The Circle, New Republic, The Sunrise Show,, Herald Sun, Toronto Star, Globe and Mail, and T.V. show House.  She has traveled the globe as a cat welfarist, lecturer, and International Cat Behavior Expert for major cat brands to Australia, the Philippines, Canada, Costa Rica, Panama, Italy, France, Spain, Switzerland, and the UK.

Is Your Cat a Good Candidate for Behaviorist Help? Read over 200 behavior reviews.

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Featured in The New York Times, Cat Behaviorist Mieshelle Nagelschneider, International Cat Behavior  Author of THE CAT WHISPERER, Random House Publishing (with co-writer Cameron Powell).  #1 Amazon Best Seller for Cat Behavior Books in Animal Psychology since 2013.


“Thanks so much for your help, Mieshelle!” ~ Charlize Theron, actress. 

Exciting news for 2017! If you schedule this month with cat behaviorist Mieshelle you can be part of our feline social facilitation survey study to not only help your cats, but change cats’ lives everywhere by understanding more about their natural instincts and feline biology.

Cat Behaviorist Recommendations and Reviews:  “The reason people are so mesmerized by house cats is because they are truly miniature versions of lions, tigers, and leopards. Mieshelle explains in an unprecedented and a most accessible way, the behavior of the house cat, with her unique insight into the often misunderstood companion animal that is as wild as we have become civilized.” Jordan Carlton Schaul, PhD — Contributing Editor, National Geographic Society and Curator, Orange County Zoo, Los Angeles, California

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 Heimann 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.

Mieshelle is here to solve your cat’s behavior issue(s). Like it or not, working with a cat behaviorist that is not only certified, but has formal education and experiential work in cat behavior is vital in solving any cat behavior issue (The Cat Behavior Clinic has all of these). 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, which is why we are here for additional correspondence (phone follow-up consults) after your consultation should any changes or additions need applied to your cat’s behavior plan. 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.

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Why a Full Cat Behavior Plan and Support is Important:  At The Cat Behavior Clinic we have a licensed veterinarian, Dr. Jim Shultz, and cat behaviorist with formal study in cat behavior that take the time to practice responsible and ethical behavior care for cats. We offer more than one phone or Skype video consultation appointment to provide you and your cat(s) an effective and all-encompassing behavior plan and 4 to 8 weeks of weekly follow-up should you need it.  Mieshelle’s most recent study of animal behavior was at Harvard University with a focus on animal cognition. Best of all, the Clinic has exclusive rights to Mieshelle Nagelschneider’s proprietary, 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)!

Understanding What Solves Cat Behavior Issues:  With most cats we work with, the behavior plan is a progressive one that, along with your feedback, develops along the way in a step-by-step process. Dedicated to the study of cat behavior (especially the African wildcat and animal cognition), The Cat Behavior Clinic conducts behavior studies as part of many of our behavior consultations. This invaluable information benefits not only the consulting cat and owner, but also the lives of cats everywhere. Mieshelle has studied feline and animal behavior for 20 years, conducted behavior studies, and most recent study of animal behavior was at Harvard University.  She travels worldwide to lecture on cat behavior (most recently as the keynote speaker for the Humane Society and SPCA in Toronto, Canada behavior convention 2014) and in addition to working with the Animal Welfare League internationally, has authored a scholarly cited and science-based cat behavior book (Random House Publishing) with the latest strategies to help cats — as opposed to other cat behavior books filled with obsolete and incomplete advice you can easily find on the internet.

Media, Lectures and Spokesperson:  In addition to behavior lectures for the Humane Society and SPCA, Mieshelle was the International Cat Behavior Expert for Whiskas on their international cat behavior media tour in Australia where she educated cat owners on the latest research in cat behavior to better understand and help their cats.  She has guest starred as “The Cat Whisperer” on Animal Planet, the cat behaviorist and co-creator for a National Geographic Wild documentary, “The Wild Side of Cats”, MTV,  made numerous guest television appearances on shows like The Today Show, The Circle, The Sunrise Show, FOX, upcoming NBC Dateline, and countless other radio shows and media interviews across the country and internationallyShe has been vet-referred since 1999 and has performed thousands of consultations in-person, by phone and email. She is also a long time member of the Animal Behavior Society, Cambridge Center for Behavioral Studies, Certified C.A.T. Behavior Counselor with Cat Behavior Counselors, and member and past associate Certified Cat Behavior Consultant of The International Association of Animal Behavior Consultants, Professional member of the Association of Animal Behavior Professionals, and worked with NKLA and Best Friends Animal Society in L.A. as ambassador for the cats needing forever homes.

Solving Cat Behavior Issues:  Mieshelle can solve your cat’s behavior issues with a behavior plan designed for your cat(s) that include the latest scientific research and advanced techniques that have helped thousands of cats and their owners. Litter box elimination issues, urine marking, excessive meowing, inter-cat social and aggression issues, are her specialty.  Mieshelle is also known for solving behavior issues that are deemed “unfixable”.  As a responsible behaviorist for your cat, Mieshelle has on staff a licensed veterinarian for consultations (Dr. Shultz performs in-person consultations) that should be conducted with a veterinarian. Through our science-based Cat Whisperer® feline consulting services (which includes the Nagelschneider Method for feline social facilitation), we have more experience in solving unwanted cat behaviors, with more cats, than anyone in North America — and probably the world. And that’s no fluff. But don’t take our word for it. The Cat Behavior Clinic has more testimonials than any other behaviorist or cat clinic since 1999. See what people just like you have said about us.

Are your cats not getting along? The Nagelschneider Method (based on social facilitation) is just one of the many breakthrough techniques that Mieshelle created and the clinic initiated! Her expertise has been sought out by and featured multiple times on National Geographic, Animal Planet, Whiskas, The Today Show, Cat Fancy Magazine, USA Today, Martha Stewart Radio, This Wild life, New Republic, The Divine Cat, Real Simple Magazine,’s “The Cat Whisperer”,, PawNation, The Daily Cat, and countless others (nationally and internationally). She also serves on the advisory council for Pet360, and is the cat behavior columnist for Cat Whispering 101 on the and the resident cat behaviorist for Modern Cat magazine. She was recently featured in The New York Times and on her cat whispering segment on The Today Show with Dean Cain and Hoda!



What Happy Cat Trainer Clients are Saying in 2011

"Thank you so much. You're a miracle worker. Lexi [right] is as happy as a kitten and has not had one accident. I did everything you told me to do and problem was fixed! Our whole family cheered and you can just add that to your website of happy customers.
cat hissingYour fee should triple for the happiness of understanding how Lexi 'works' and what makes her happy. Our family, including Lexi sighed a huge relief this week, thanks to you. Makes me think that there are a lot of kitties on Prozac and taken to the humane society for no reason... she isn't sick, we just didn't understand her."
~ Michelle Kraft, one of many happy clients nationwide

News Flash!

Cat Whisperer Book why do cats eat grass

Publishers with publishing rights in over 80 countries know Certified C.A.T. Counselor, Mieshelle Nagelschneider, has the secret sauce. After bidding wars in which the fur did fly, Random House and Germany, publishing houses have won rights to publish the forth coming cat behavior Bible, The Cat Whisperer, by our chief cat behaviorist, Mieshelle. Now they're all purring away: publication in 4 languages is coming!

Why Do You Need the Cat Behavior Clinic?

The Cat Behavior Clinic is the premier cat behavior consultancy for the English-speaking world. If you're like the rest of our satisfied clients, you've realized the superficial tips and tricks on the internet, from friends, and from books aren't working. Even most vets give incomplete and obsolete advice; after all, they're medical doctors, not psychologists.

In reality, you can't even "whisper" at a cat; what we really help you to do is to listen to your feline.
"Our vet enjoyed working with you and the entire staff is so thankful you helped us with our cat's issues. I think they were really getting tired of seeing this cat week after week! If only this knowledge was more readily available to cat owners, there would be less of them in the shelters! I will follow-up with you after our vacation. Thank you!!"
S. Berger, New York, NY
For your cat's sake, what you need is an expert cat behaviorist. Why Mieshelle or one of the behaviorists trained in her methodology? Simple: Mieshelle's Cat Whisperer services have helped more cats and cat owners than anyone on the planet.

We also ensure that the information and help you receive from our cat behaviorists is on the leading-edge of scientifically-validated and field-tested techniques.

We work with owners to help them understand how their cat really thinks, which includes cats' social cognition in particular. The advice we give in our trademark C.A.T. Plan can therefore last for as long as you own a cat, any cat, not just until your current issue is resolved. We believe that knowing how your cat thinks is an important step in preventing unwanted behaviors in the future.

Are you ready to give your cat and yourself the ultimate gift of happiness and mutual regard? Have you run out of ideas, or hope, and you're at your wit's end? Do you think you've tried everything? You haven't tried Cat Whisperer behavior modification!
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