Jonathan P. Klein, CDBC, CPDT-KA, was a nationally recognized dog trainer and behavior expert (see his Wikipedia page here). He held certifications as a trainer from the Certification Council of Professional Dog Trainers and as a dog behavior consultant by the International Association of Animal Behavior Consultants. Jonathan headed the “I Said Sit!” School for Dogs in West Los Angeles, which received the Best Trainer award by CityVoter consistently from 2009 to 2014. He was called upon as a dog behavior expert by numerous media outlets including The Associated Press, Parents Magazine, National Geographic Kids and USA Today. Sadly, Jonathan died of cancer in December 2016.
Get our latest, unbiased product reviews delivered weekly—including comparisons of the newest foods, toys, and gear. Stop buying duds and start investing in the best for your companion.