ironrose2000 wrote:It's a signal - we as humans just aren't (normally) wired to understand the full range. Dogs (like cats, horses and quite a few other animals) use a full range of bodily movement to convey messages. They cannot verbalize, and they cannot smile/frown - all cues humans are used to. When we say "that dog is smiling" we're simply projecting human traits. And as someone who's had over 25 in his life, I feel like I've only scratched the surface. BTW, I have seen instances of a dog wagging it's tail one minute and then biting the hell out of someone the next.
But do they signal in the apparent absence of an observer ("talking" to themselves)?