The Yellow Dog Project and yellow ribbon campaign encourage dog owners to recognize and appropriately react to dogs on-leash.
Yellow Ribbon Dog Project
See that dog with a yellow ribbon on his leash? Don't try to pet him
What Does a Yellow Ribbon on a Dog Collar or Leash Mean? - Parade Pets
What Does a Yellow Ribbon On a Dog's Leash Mean?
Yellow Dog Project signals not-so-social dogs
When you see a yellow ribbon on a dog's collar, this is what it means
What Does a Yellow Ribbon On a Dog's Leash Mean?
What Does a Yellow Ribbon on a Dog Mean? — Lecker Bites
What does a yellow ribbon on dog leash mean?
What Does a Yellow Ribbon On a Dog's Leash Mean?
Colour-Coded Dog Leashes and Collars: What's the Meaning