lovethelabs 2 points 3y ago
A guide dog is only one type of service dog and its main goal is to guide, basically be the eyes of a person and get them through the routine of their day. They are trained NOT to react to unusual people whether they are dressed remarkably differently, a clown for example, or whether they are dressed typically but happen to be in a wheelchair or scooter or something slightly different than the usual passerby. Guide dogs and pets can and often do have instincts to protect, but that is not a skill they are formally trained in usually. Since they are trained to ignore all the attention the public may try to give them, they may even ignore the person acting in a threatening way.
A guide dog bonds to their owner so their instinct to be with their owner in a regular routine may be enough for the dog to alert when something is not part of the routine. This is where the dog's intelligence comes into play. If there were a large fire, for example, this would not be part of the normal daily routine. It looks highly unusual, it's not a common smell (in that amount), it's not something the dog has been trained to maneuver or been repeatedly exposed to in training, and it's not part of the daily routine. This being so unusual and off the routine might be enough for the dog to communicate something is amiss. How a dog communicates this is unique to their personality.
If my own dog starts to act differently, like not respond to commands as calmly, I ask myself what is different in the day, what is different in our routine or what new thing have we encountered that she is not used to.
It might be more appropriate for law enforcement service dogs or military dogs to watch for specific queues that could lead to danger. But this has to be taught and tested which means there has to be specific dangerous scenarios dogs are safely put through and taught to maneuver.