Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This is a short guide of these Junglers.
Jax - Summoner's Rift
Today, I experimented Jungle Jax and I realized he jungles much faster than Warwick. I got all the creeps on my side in less than 4 minutes! I get my Counter Strike (E) first for dodge and an AoE. Spam you W and E to jungle faster. The only reason Jax should jungle is that he's not that good in laning in Summoner's Rift. Ranged champions will tear him apart.
Warwick - Twisted Treeline
I find all Warwicks that jungle in Twisted Treeline starts at the small creeps. If Warwick can get a Blue Golem at level 1 in Summoner's Rift, why can't he get the big creeps in Twisted Treeline at level 1? So I tried. It works! And I think he jungles faster than usual. Warwick can also get a Dragon at level 5, which I don't see people often do.
Good luck and have fun! (if it works)
Tell me if this works for you! =D