Well i know someone who is very spirtually sensitive and i don't know if they were trying to do it (i don't talk to this person very often. my sister does) but i guess one time he saw through what one of my sister's pets was seeing. i think everything her dog was seeing. again i don't know if it was out of free will but i guess now you know it's possible.
It sounds like a weird form of remote viewing, other than that I've never heard of such things. I suppose if an animal was your familiar you may have that sort of bond, but it sounds very sci-fi to me.
Some animal psychics, who find lost animals, claim they use this power,the psychic was very accurate which later caused the dog to be found. Its like a form of remote viewing, but its like you "hacked" your way in some animal's brain.
Thanks i was just wondering because i saw it in a book and it looked kind of cool. I want to try it but i didnt know how. I can talk to my cat familiar sassy but i was going to see if i could find out how to do this and get her to help me.