I still think you can't hit dorment bats with arrows.
For foxes and other animals, try aiming at their FEET, and then shooting when the aim bar stops moving! The best way you can achieve this:
for foxes and deers, keep following them. When they stop, you aim to shoot. If they move, CANCEL aiming and follow until it stops again! And yes, this might take a while! Also, with 10 - 15 MM you'll need to be REALLY close to the target!
For everything (including foxes and deers), get on a boat, start roaming untill you find an animal close to the water. Aggro it so it rages on you, and GO AWAY from the shore water. Don't get TO close or they'll be able to hit you. Since they'r aggroed, they'll keep bouncing on the shore water trying to catch you stoped on a single spot, and you'll have plenty of time to aim and shoot. Remember: aim at the animal FEET, or just a lil under it, and shot that same position!
And about the bat kicking your ass. If you have low agi and low UA, also no defenses UP by the time it aggroed you, well, you could be using high Q bronze armor and a b20, it would still kick your ass

With 25 agi, 25 UA you can naked fight bats barehands.