In this episode Alberto Angela offers us a fascinating journey into the minds of animals. How many times, looking at your dog or your cat, have you asked yourself: who knows what he thinks, and what he would say if he could speak like us. Well, many researchers have asked themselves the same question, in particular neuroscientists and animal behavior specialists; and not only for dogs and cats but for many species. Today we know that the minds of animals are similar to ours in many respects, and behaviors that once seemed mysterious to us, or that we misinterpreted, finally have an explanation.