a.) He lacks credentials; b.) He hasn't titled dogs in either obedience or in the show dog ring; c.) He uses «old methods» such as leash corrections, e-collars, dominance techniques, the alpha roll; which they claim induces «learned helplessness»; d.) The dogs are stressed when his methods are applied; e.) Some behavioral problems are medically related, are not going to be addressed by
any kind of behavior modification program, and Cesar Millan doesn't clarify this in his writings or on his TV show; f.) He doesn't use the accepted behavioral terminology, and makes up his own behavioral vocabulary; and g.) He and his company are being sued by a former customer for allegedly injuring a dog; inferring or charging this is evidence he is a cruel and inhumane trainer.
The same goes for all manner
of training, from working on basic cues or tricks at home to signing up for a group class or individual training
program of ANY
kind, whether it's help with the basics, fun extracurriculars, or more serious
behavior modification help.