Cat Behaviorist of California with The Cat Whisperer™

For Over Two Decades Scientifically Solving Cat Behavior Issues from a Feline Behavior Evolutionary Point of View

With Over 400 Testimonials National Geographic Cat Behavior Expert Mieshelle Nagelschneider has More Cat Owners Purring Than Anyone!

“Thanks for all Your Help Mieshelle!” Charlize Theron

The Cat Whisperer

Schedule a Remote or In-person Cat Behavior Consultation with Our Doctor and Certified Cat Behaviorist. 

View 400 Testimonials for Solved Cat Aggression, Urination, Defecation, Urine Spray-marking, Vocalization and Compulsive Disorders:

” I 100% recommend Mieshelle!”  Dr. Midori Higashi

Cat Behaviorist from Los Angeles Mieshelle Nagelschneider
Media Tour for Arm & Hammer Cat Litter with Mieshelle as the International Cat Expert and Spokesperson for Arm & Hammer.

Important Update: Scheduled cat owners can become part of Mieshelle’s Upcoming National Geographic/Disney cat behavior show production. We are currently scheduling the doctor and behaviorist through October 31st.  For urination or defecation issues, participate in our feline study and receive the reduced consult fee through October 26th.

For Over Two Decades Scientifically Solving Cat Behavior Issues from a Feline Behavior Evolutionary Point of View

Mieshelle studied animal behavior and animal welfare at Oxford University and the University of Edinburgh (Royal School of Veterinary Studies), and is the author of the New York Times acclaimed feline behavior science book published in 4 languages by Random House Publishing.

Founder and director of the clinic in 1999, her in-depth scientific analysis of the behavior and evolutionary biology of the cat and her animal behavior study at Harvard University, has enabled her to help thousands of cat owners over two decades and in over 30 different countries, solve their cat’s behavior issues.  Dr, Shultz performs in-home consultations locally only where he is licensed to practice and vet-to-vet remote consults everywhere.  Mieshelle performs consultations world-wide either remotely by phone or video or in-person in the Los Angeles area.

Cat Behaviorist Mieshelle Nagelschneider Cat Behavior Books

37 Wildcat Species Expert for National Geographic

National Geographic Logo

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 many of National Geographic’s published works on the 37 species of wildcats, tigers, and every breed of the domestic house cat.  Originally from Los Angeles, Mieshelle is known for her global leadership in cat behavior education helping cat owners and veterinarians from the Philippines to Australia understand cat behavior from a feline biology and evolutionary point of view.  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. 

Mieshelle is the recipient of the Golden Purr Award for her contribution to the science of cat behavior. Her award-winning first ever scholarly-cited cat behavior book (Random House Publishing) for cat owners is published in 4 languages and across 80 countries.  Acclaimed by The New York Times, the book is recommended text for a number of animal behavior certifying organizations. Read more about Mieshelle international cat advocate work and lectures conducted around the world on our cat behaviorist home page.

What Our California Cat Owners Are Saying in Beverly Hills, Santa Monica, San Diego, and San Francisco.

Cat Behaviorist



California Cat Behavior Testimonial Update: “I’m already having much success with (behavior plan removed) and all of her stools have been in the box since (behavior plan removed).  Should I send in a picture of a stool covered with litter? How should I handle getting a picture of her stool? I’ll send a photo of her (behavior plan removed) and an update on her behavior to the link. Thanks so much for all of your help.”  Ann H.  Costa Mesa, California 

Please contact the clinic to schedule a phone or video (Skype, Zoom or Facetime) behavior consultation.  Please visit our home page to begin. Cat Behaviorist Mieshelle Nagelschneider goes beyond the obvious behavior strategies and facts during behavior consultation program.  She has lectured at the international level from Australia to the Philippines at education conventions for veterinarians, the Humane Society/SPCA on all common, but sometimes very complex, feline behavior issues.

“We didn’t know where to begin with our cat’s behavior issues, and the vets never seemed to know what to do either.  Our family is so glad we placed our complete trust in you and are forever grateful to have worked with you.  Thank you for saving our cat, Putters!  Steve R.  Santa Monica, California – Phone Consultation

For over two decades Mieshelle has conducted several thousand cat behavior consultations in over thirty countries.

Cat behavior issues like urination, defecation, aggression and other cat behavior issues are very solvable. Taking into consideration feline evolutionary biology and your cat’s gene encoded behavior (instincts and fixed action patterns) is just one of several components that must be a part of a successful behavior plan that has lasting results.  To achieve this, it’s necessary to work with an experienced cat behaviorist, but most importantly, one with formal study in animal behavior that can apply the sciences of genetics, animal psychology, biology, physiology, learning and memory to effectively correct a cat’s behavior.

“Queen” of the Cat Behavior Specialty, National and International Cat Welfarist, Lecturer, Behaviorist, and Award-winning Cat Behavior Science Author

Los Angeles cat book chat

Media Tour with Mieshelle as the International Cat Behaviorist for Arm & Hammer in Toronto, CanadaRead more about Mieshelle’s national and international media, animal welfare and spokesperson work on the clinic about page. Watch Mieshelle with Howie Mandel on National Geographic’s Animals Doing Things and The Wild Side of Cats, the Today Show, Nat Geo Wild, Animal Planet, Hallmark Channel (and countless others) and her work with Best Friend’s Animal Society, the SPCA, and in Los Angeles for the NKLA (No-kill Los Angeles).

Call the clinic today to learn more or to schedule your consultation at 503-267-8888.

Watch Los Angeles Cat Whisperer Mieshelle on the Today Show

About Cat Behaviorist Mieshelle Nagelschneider in the Los Angeles, California News 

Please visit our clinic Home Page to Learn More and to Schedule.


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

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