Whether your dog is afraid of others and cowers away, or gets too excited which causes fear, improvements can be made to improve their behaviour and mental wellbeing. Always consider the emotional state of your canine companion when out and about. He or she can only learn if they are calm and not in a distressed state or jumping around in excitement. If you’re ever concerned, increase the distance between you and the other dog so they’re not distracted. Don’t test their behaviour, always build for success and stick to the training plan. Take charge but in a gentle way and always be positive. If your dog is displaying any of these behaviours, you should arrange to see your vet as there may be a physical cause for the behaviour. It’s common for dogs to react this way if they’re in pain, it’s their way of warning others to back off to protect themselves from further harm. Another reason might be that they are highly sociable and enjoy playing with dogs, so if they’re on a lead and spot another dog, this causes over-excitement, resulting in frustration which is expressed as barking.