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Fitting the collar
The trainer should be fitted so that the contact area presses firmly against
the dog’s skin. When properly fitted, you should be able to fit a finger or two
snugly in between the collar and the dog’s skin. When properly fitted, the
trainer should not move on the dog. The best location for the trainer is directly
under the dogs snout.
A loose fit can allow the trainer to move around on the dog’s neck. When this
happens, the contact area may rub the skin and cause irritation. If the trainer
is too tight, the dog may have difficulty breathing.