Bear - one of the better tames
Chicken - Is okay
Cow - fine
Bull - it needs a 15% damage increase atleast. - the game needs a thatch animal and i say this one for it.
Crow - Need more HP
- Would like to see it have a map fetching ability
Razortooth - it's fine currently
shieldhorn - fine currently
Elephant
Giant pig - more HP really needed
Giraffe - Increase its gathering rate by 10% and possible even melee itself by 5%. It's slower than hand.
Horse - they are too fast
Lion - Needs more HP and damage, balance around Tiger.
Monkey - It's fine.
Parrot - Just more interactive with emotes and voice lines would be nice and more HP like the crow it's very low.
penguin - apply its bonus to babies?
Rabbit - fine
Rhino - Gathering needs increasing by 5% and more weight. Maybe aswell a 5% increase to base stamina, they are very low.
Seagul - More like the Jerboa with weather detection
sheep - its fine
tiger - best place of the damage dealers
vulture - fine, though Enemy detection ability?
wolf - Needs a slight base HP and and damage buff by 5% and then it relies on pack mainly.