In addition to safety, why should the collar be removed from the dog?

The collar should be removed from the dog to prevent tangling. This is particularly important during activities where the dog may be running or playing in environments with obstacles, such as long grass or brush, where a collar could catch on branches or other objects. Removing the collar helps ensure the dog can move freely and safely without the risk of getting caught, which could lead to injury or panic.

While there are valid reasons related to safety for removing a collar, such as avoiding distractions or identification purposes, the primary concern in many training and handling situations is ensuring that the dog is not at risk of tangling. Additionally, while weight reduction can be a factor in certain contexts, it is less relevant in routine handling and safety considerations compared to the risk of tangling.