Guild Wars 2

Basically:

Moas would grind the soil, and eat from it.
Bears would roll on the earth.
Moose/cows would moo, and lay down.
Wolf would howl.
Animals of the same kind smell each other.
Roaming together in a pack.

etc etc. only matter of creativity.

I KNOW they preform emotes, yet most of the time the are just walking around senselessly. But if they would mostly preform something and walk around less frequently, that would give the game’s sphere a big, positive change as a living world.

Well, wolves and hyenas do howl as an attack animation to call a pack member to them.

Not sure how you would have give pixels the ability to smell.