This dog tried jumping out a window to get to another dog! Reactive Dog Training: How I Work With Extreme Reactivity Is your dog barking, lunging, or losing control around other dogs or people? In this video, I work with one of the most reactive dogs I’ve ever seen — and walk you through the real-time process of reactive dog training using balanced techniques. Whether your dog is reactive on walks, at the window, or around new environments, this video shows you how to: Understand what causes dog