No, you should not shave a Collie dog. Shaving a Collie disrupts the natural insulation provided by their double coat, leaving them vulnerable to temperature extremes. Shaving also alters the texture and quality of the coat, potentially causing it to grow back unevenly or lose its protective properties.
If you’re concerned about managing your Collie’s coat, regular brushing to remove loose hair and prevent matting is a better approach. Professional grooming services can also maintain your Collie’s coat without resorting to shaving.