Why lane Udyr? One of the greatest jungles in my opinion. I've done jungle and I've done lane and what I realized is if you lane Udyr, it's pretty broken just like lanewick use to be. Your lane sustain is incredible and Udyr does some of the most early game damage in the game with tiger stance. You better hope someone is dumb enough to facecheck your bush, because if they do it's first blood at level 1. About 90% of the time that I lane Udyr i end up getting first blood and become roughly 3-0 by level 5. This of course is if you have a good lane partner to back you up.

I build tiger stance all the way first because it does the most damage. I get tiger stance all the way, then turtle for the lifesteal and mana regen from attacks, then pheonix. You should only get bear stance up three times because the stun duration doesnt get any larger and that's all you'll be using that for. Switching between the pheonix and tiger stance will optimize your damage output. If it's a tough 1v1 fight you're in then switching between tiger and turtle stance is the best way to go.

This build will give you a great amount of damage as well as some tankyness. Obviously you can change this up a little bit by getting a banshees veil instead of frozen heart if their team is ap heavy or has a lot of cc. I find that frozen heart helps the most not just with the 99 armor but also the passive of cooldown reduction and the 500 mana. With these items and tiger stance your attack speed with the on hit effects will be insane. If they don't focus you, which they shouldn't if you have a proper carry, then you will shred through the opposing carry in no time.

Ghost and Exhaust is the way to go. If you decide to do flash instead of ghost or ignite or teleport instead of exhaust because of personal preference that's ok, but just make sure that either ghost or exhaust is one of your summoner spells