Its all about soscialising him , he will get scared on the lead because you have removed his choice of running away and so making him front his fear of other dogs , classes are a good idea to get him used to other dogs and you will probably find off lead in a controlled enviroment he will be fine as he can remove himself if frightened , Fear can end up as agression if not corrected so be gentle and confident when walking him time will fix this problem as you soscialise him around new things .

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