In many dog training and rescue communities, red collars (or red leashes) are often used as a visual signal to others that a dog needs space—typically because the dog may be reactive, aggressive, fearful, or undergoing behavioral training. The idea is to warn people not to approach or allow their dogs to interact without permission.

So when the woman at the store said, “Only dogs that actually need a red collar should buy them,” she was likely referring to this unspoken code. It wasn’t just a color preference—it carried a message.

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