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BEST OF BEHAVIOR
  • Welcome
  • Services
    • Dog-Related Services >
      • Training
      • Behavior Modification
      • Aggression
    • Puppy Training
    • Cats
    • Virtual Training Sessions
    • Rescue and Shelter Support
  • About
  • Discovery Call
  • Locations

About Sonia Fetherling

Sonia Fetherling, Best of Behavior
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Sonia Fetherling is the proud owner of Best of Behavior, LLC. in the suburbs of Chicago, IL.
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A great part of her work is helping dogs and cats with a wide range of difficult behavioral challenges including aggression, fear, trauma, separation anxiety and more. These clients are who she learns the most from!

She also offers private in-home training, day training, Puppy Start Right classes and cat behavior consults!

Sonia began her professional training journey in 2000 after adopting an adolescent Black and Tan Coonhound and Bluetick Hound mix, she named Ellie-Mae in 1999.

She has shared her adult life with various breeds including a Border Collie and a Tibetan Mastiff, and has enjoyed different activities with her dogs including agility, tracking, and Rally O.

​She has steadily continued to learn by obtaining accreditations, attending seminars, workshops, lectures, webinars, and expos, and reading books. 
My #1 training tip: Ask yourself "What would I like them to do?".

​Services: In home (1-1) dog training and behavior modification for aggression, anxiety, separation anxiety and other challenging behaviors . Puppy Start right classes. Day training. Board and Train. Fusion classes for families (online and in -person support and lessons). Potty training. Cat training and behavior modification.

Behavioral issue focus: Aggression (inc.dog to dog and dog to human), anxiety, separation anxiety, intra household dog aggression, dog to cat aggression(and other species), predatory behavior.

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© Best of Behavior 2026
  • Welcome
  • Services
    • Dog-Related Services >
      • Training
      • Behavior Modification
      • Aggression
    • Puppy Training
    • Cats
    • Virtual Training Sessions
    • Rescue and Shelter Support
  • About
  • Discovery Call
  • Locations