What goes into the minds of your four-legged friends, when they stop in front of the TV (or the screen of a tablet or a PC)? What are their favorite subjects and, above all, do they have fun?

More than the image, it is the sound that first catches their attention: the yelps and barks of other dogs, compliments and commands directed by man and the squeaking of rubber toys are stimuli that attract these animals in front of the screen.

Without respite. However, the methods of use are different from ours. Dogs do not stand still in front of the images but they are interactive spectators, who approach the screen to look better and are frequently shuttled between the TV and the humans sitting on the sofa.

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How do they see? The vision of dogs is dichromatic (and not trichromatic like the human one). They perceive the colors in the wavelengths of blue and yellow, predominant spectra in programs designed specifically for Fido. They are more sensitive to movement and it is therefore likely that the current high definition images, which have eliminated the "flicker", are more congenial to their use.

Their favorite subjects? Several studies that have traced the canine eye movement have established that dogs love to watch scenes that see their peers as protagonists. Provided they are short films: unlike men, dogs have lightning-fast interactions with the TV, sometimes lasting less than 3 seconds.

The substance counts for little. We do not know if they prefer a certain type of program, due to the kind of emotions they arouse. Put in front of three screens with different contents, dogs show that they don't know how to choose, and that they prefer a screen only, regardless of the image shown. Remaining on the subject of preferences, those of Fido are very tied to the character of the dog, to his experience and to what the master looks at: even in front of the TV, our faithful friends follow human gestures, and lay their eyes where we lay them.