I don't honestly expect this will ever be created but I don't think it's been suggested yet? Maybe it has? But if you know of the Series Game of Thrones. The Warg are a type of people or ability that can temporarily leave there body, fall unconscious and take control over animals and in some cases other people.
If someone ever uses this request to make a mod there are tons of ways to implement it and you could limit it to animals only and or expand it to Warging into people as well.
Notes:
It could be simply a trait that allows Warging.
It could be a new race.
It could have a level up system that improves over time and unlocking more features similar to the Jedi Powers Star Wars Mod.
It could only work on Animals or enemy pawns, or perhaps any pawn except mechanical. Meaning even visitors?
The developer may wish to read into Game of Thrones lore if they don't already know because if someone wargs into an animal and the animal dies? Does the user die to? Or just return to the body? Ultimately even if the lore does say the user dies the mod developer may NOT want that to be the outcome for practicality reasons or else the mod may be very weak. However maybe lower level warg users die along with the animal but at higher level return to there human bodies when the animal dies. So there is a lot to consider.
I do think it would be difficult to program and debug so yeah I really don't see it likely to happen.
I just wanted to put this out there so the idea can be born.