Adam asks: "Also, is eye contact from the object of attraction onto the dog, required for this phenomenon of emotional projection?"
It's not required as a two way deal, but the dog fixates on the eyes of what it's attracted to because this gives it direct and instant access to its own body's physical center of gravity as a tightly focused single point, thus, the "signal" it picks up from the object of attraction is more fine-tuned and the motor skills triggered as a means of responding to it are heightened and refined as well. Now, were the dog to become the object-of-its-attention, it might lose its focus on the other beings' center mass and so its past emotional history will be imposed on what it's attracted to and it will lose access to refined motor skills. The resistance of the thing will be at the forefront of its perception rather than the fluidity of its motion and it may end up feeling "accelerated" out of its body (and if it's not in its body it's OUT OF ITS MIND).
But, if it can still feel the preyful essence of what it is attracted to and retain awareness of its center mass it is thus able to attune its movements in syncopation with what it is attracted to. This formula can account for all interactions between any two individuals. For example, if the other being acts like prey, then the dog acts like predator and it will have the means of taking it down at high speed and "anticipating" where it is going to be next. At a certain rate of intensity however the dog as predator goes into "missile lock" (breeches emotional capacity) and fixates on a loci of its body as the take down point of maximum leverage. But if the other being is capable of reflecting projected energy back onto the "projector" (in other words act like a predator) because its emotional capacity is high enough, and if the projector as object-of-its-attention can still feel preyful essence because its emotional capacity is high enough, then the emotion elaborates into a sensual feeling and ultimately into sociability. THIS IS DRIVE, i.e. the distinction between prey drive (can fluidly shift from one loci to another) and prey instinct (stays rigidly fixated on one take down loci). In Drive it feels its own p-cog's movement when object moves as something pleasurable because the center mass of the thing in real time is still part of its impression and is rendering a sense of fluid movement. Hope this isn't too dense but it really is quite simple, it just becomes infinitely complex because one thing is constantly reflecting against another thing and thereby elaborating into increasing levels of complexity.
The link below demonstrates that the phemonenon of emotional projection and the principle of emotional conductivity is the universal operating system of animal consciousness and in this example, how the predatory aspect of the duck is reflecting the dog's projection of energy back onto the dog, with the intensity of the duck accelerating the dog's nervous system so that the dog barks in order to dump the energy it is unable to "digest." The dog doesn't have access to fine motor skills and is feeling pushed on, and so it backs up to reduce the sensations of pressure. It's unable to flip polarity. Nevertheless, the intensity is also triggering deep physical memories of litter experiences so the dog is experiencing the moment as if it is being chased by its littermate (hence the barking is metered) and so its frame of reference remains social, but for now overloaded (the bark is being focused in the head). Still, the reality is that the dog's attraction to the duck will be increased and let's hope its emotional capacity increases along with that as well. Meanwhile the duck is chasing the dog's eyes as access channel to its "beak" since the form of dog triggers physical memories of its mama. And let's hope the emotional capacity of the duck increases as well so it can continue to reflect energy back to the dog as the dog gets more confident. If the principle of emotional conductivity increases both animals emotional capacity, then subsequent video might show dog and duck sleeping together on dog bed!
My advice to baby duck: Keep On Pushing!