Udyr is a decent splitpusher and duelist
If played well you can carry most of your games
Melts squishy targets
Escapes almost every situation (Riot nerf Ashe plz T.T)
Easy Jungle-Clear

Start with Gromp (smite) go on to Blue activate your Iron Mantle and follow with the Wingborne Storm keep doing this (do this at every camp).
Do Wolves go to the raptors here its important to hit all mini raptors with the flame breath of your Wingborne Storm go on to Red (smite). Head to Golems start attacking the little one and drop him around 25% now let focus the big one and let the mini golem die in the aoe of your Wingborne Storm.
Now you are 4 and could do a gank (bot at blue side,top at red side) or recall to get your jungleitem upgrade ( +boots)
buying boots that early increases your chance doing a successful gank but if it doenst work you will delay your devourer

Use your Iron Mantle switch into Blazing Stampede , stun your enemy activate your Wingborne Storm and walk behind your enemy and cancel your autoattackanimations to stay in his range .

YOU WANT DRAGONS
After buying your jungleitem, go botlane kill the scuttlecrab + gank botlane. If you kill their botlane head to Dragon. Now its important not to waste time so dont die. You have to find balance between gaking lane and killing your jungle camps. If you just keep clearing the jungle you will loose your early influence completely. And if you just gank you wont be able to stack your devourer in time.

You are an good splitpusher you almost instaclear waves. Dont forget tell your team not to fight unless two are coming bot to stop you. In fights you can zone their adc and kill him(dont dive to hard for him) but you can peel for your carries too.