This is what I would want from these animals.
Also, Reduce the size of Behemoths? Or add a medium Gate. (and while we are at it, increase the costs of gates by ALOT. It is so ugly to travel around and watch all those gates walling in people. Make them so costly that you ever only want a minimum of gates)
Bear - Feels pretty good, maybe a bit strong for a Tier2 tame.
Chicken - gives eggs, what more do we need?
Cow - Does its job, gives us milk and prime meats.
Bull - A cargo saddle to increase weight.
Crow - Add a bit to vision for the person carrying it.
Razortooth - Have not used this yet.
Shieldhorn - Have not used this yet.
Elephant - Might need a tad more stamina, and its LMB attack need a better hitbox, It rarely hit any resources every 2nd attack now, forcing to use the slower RMB even on a single tree.
Giant Pig - Why is this a Giant Pig? You already removed the "Giant" from creatures! Pig - Should be able to dig the ground like a shovel (for potatoes/earthworms, or maybe truffles for cooking?!)
Giraffe - Should get a buff to thatch gathering.
Horse - Have not used this yet.
Lion - The grab is horrible, at least increase the cooldown of it.
Monkey - Have not used this yet.
Ostrich - Feels good.
Parrot - Feels good.
Penguin - Feels good.
Rabbit - Luck bonus when digging up treasures? Like increasing the maps effective value with a % according to its level.
Rhino - More weight
Seagull - Should be able to fish.
Sheep - Female sheep should be able to be milked, like cows.
Tiger - Feels good.
Vulture - Needs something!
Wolf - Is a bit weak, maybe add some bonus to them for being in a pack, like the Compy in ARK