Here’s a shorter version of the article that keeps the key points clear:

What Does It Mean When a Dog Wears Blue Gear?
Ever see a dog in a blue vest or leash? It might look stylish, but it often signals something important.

Blue Usually Means “Working”
While there’s no official color code, blue is commonly used for service dogs or dogs in training. These animals assist people with disabilities — guiding the blind, alerting to seizures, or helping with mobility. If you see one, don’t pet or distract them, even if they look friendly.

Therapy Dogs and Trainees
Therapy dogs (used in hospitals, schools, or crisis centers) also wear blue, though they don’t have the same public access rights as service dogs. Dogs in training often wear blue, too — like a “Student Driver” sign. They need focus, so avoid interacting with them.

But Sometimes, Blue is Just Blue
Not all blue gear means the dog is working. Some owners just like the color. Look for context — focus, labels like “Service Dog,” and how the handler interacts with the dog.

Other Gear Colors and What They Might Mean (Unofficially):

Yellow = Needs space (fearful or reactive)
Red = Do not pet (aggressive or working)
Green = Friendly or in training
Orange/Purple = Special roles (e.g., deaf or alert dog)
Bottom Line:
Watch for cues. Respect working dogs and their handlers. And if that dog in blue is just showing off? Enjoy the fashion show.