Nidalee can be used as either a ranged DPS, a melee DPS (cougar), an AP caster, or a mix of the two. I recently switched from AP to DPS because I wanted to look for something new, and I came up with this build on the spot. So sit back, enjoy, and then rack up some kills.

PROS:

Healing/Extra attack speed
High movement speed and jumps (for quick get aways).
Good ganker
Great assassin
Team player

CONS:

A small amount of HP
If ganked, can die if not quick to leave.
Hard to learn when to use skills, use cougar and human at the same time.

These masteries will help you a lot in 1v1s and ganks, especially because of the loads of extra damage from them, along with some extra mana regen for more minion saturation. If you think these masteries are not as good, I recommend going for straight utility, and 7 on offensive.

ALWAYS use this skill sequence. First, you get heal to farm more minions (the more minions you farm, the more gold and XP you get) Second, get your spear for more damage, and usually last hits on enemy champions when they hug a turret. To me, the trap is pretty useless unless you are worried of being ganked or are ganking.

As Nidalee, you have to keep farming minions till you can't farm no more, this is the best part about her. Always try to stay in the middle of the lane you are in, try not to push the turret until you are good and ready, and/or the enemy champion(s) are gone (be wary of a gank). Whenever you get low on health, start using your heal, never get too harassed or else you can die. As you use your heal, you get more attack speed, so I suggest staying with the minion wave until you seriously have to recall, the amount or type of the champion(s) is too overwhelming, or you know there is a gank incoming.

ALWAYS FARM, I can't even say how strict this has to be, the more you farm, the better you get. The better you get, you harder you farm. This will make hunting champions a lot easier.

These items are designed for destroying a tank, such as your neighborhood Cho-Gath, or the legendary Bigfoot (Gragas). The froze mallet helps for you to chase and get a quick kill, it also gives you that boost of health you always need. Pretty much everything is for attack, since this is a DPS/AS build. You can use a bloodthirster over the hextech, the hextech is just thrown in for the bonus AP and the lifesteal etc. without worrying about losing bloodthirster stacks.