currently there are only a hand full of animals in the game and i think a few more would make the world just a little more alive
Mice and rats could spawn in cellers where you store your food and try stealing from open barrels
crows that fly in circles above your fields and try to eat your crops unless you got a scarecrow
magpies that steal every shiny item droped on the ground and bring it to thier nest
ducks that swim in lakes and fly south in large flocks when winter is near and come back in spring
hawks that fly alone in circles over plains hunting rabbits and racoons
turkeys larger more rare food sources for poultry meat
maybe some insects like earthworms, grubs, centipedes and isopods(kellerasseln) that could have a small chance to spawn whenever a player picks up a rock from the ground could be used as bait when fishing becomes a thing
speaking of fishing grey herons that sit between cattails and try to catch fish them selfs
i could go on endlessly but the animals in VS have such a high quallity in model texture and animation that this small list alone would take a while to implement but i think it would totally be worth it