AdministratorFebruary 16, 2023 at 6:11 pm121211100
Does he have a collar on? And if he does, does he have any issues with you putting a regular collar on and off?
My first thoughts are that he may have had a bad experience with leash training before you got him and probably needs counter-conditioning along with desensitizing or flooding if necessary since it is obviously an irrational fear.
He can probably get over it quick once it is attached and associated with treat-based training.