have giants always been smart enough to play hide and seek? granted ive always sneak sniped them on rogue assassin chartacters before but now im playing a straight barbarian nord...whats goin on is when i shoot them from a distance and they chase me i get up on a roof or ledge or inside something and shoot them from the safety of that...well they seem to have caught onto the tactic and are now running away and hiding till i come out again...im not complaining it does add interesting situations to the game lol but have they always done this?

Yes.

No Idea. I always just pulled out my bow and killed them.

Don't all "animals" do this?