I start out with tiger stance: Udyr's next attack will deal his current attack damage in addition to magic damage over 2 seconds.
Magic Damage: 30 / 80 / 130 / 180 / 230 (+1.5 per attack damage)

*** This effect last for 5 secs! Same as the atk speed boost.
So I enter tiger stance at 1:36 and atk the wolves at 1:40
This saves a lot of time! I finish those wolves at about 1:50 and then go on to blue

(If enemy's jungler starts with blue, I save my smite and go steal red) (at that time I have both tiger stance and bear stance.)

I always activate tiger stances about 4 secs before I get to the creeps, the same goes for gank. When I gank, I go in and activate tiger stance, then switch into bear stance right away.
If I hit the enemy champion within 5 secs, my stun hit still deal the extra damage even if I am not in the tiger stance!

Once the enemy champion got stun, I change into tiger stance again for another burst damage!