Mob info

Heres a quick informational article about mobs. (Considering your playing on normal difficulty.)

Blaze:
HP: 20.
Attacks: Fireball.
Damage done by FireBall: 2 1/2 hearts.
Damage done on contact: 3 hearts.
Found: In the nether, roaming nether fortresses.
Drops: Blaze Rod (0-1).
XP:10.

Cave Spiders:
HP: 12. (6 hearts)
Attack range: Close range.
Damage done by venom: Not entirely sure. :P
Found: In abandoned mineshafts.
Drops: String (0-2), Spider Eye (0-1).
XP: 5.

Reg spider:
HP: 16. (8 hearts)
Attack range: Close ranged.
Damage done: 2 (1 heart)
Found: Anywhere and everywhere.
Drops: String (0-2), Spider Eye (0-1).
XP: 5.

Spider Jockey:
HP: 20 (Skeleton) 16 (Spider)
Attack range: Long ranged and close ranged.
Damage: 4 (2 hearts) (Skeleton), 2 (1 heart) (Spider).
Found: On the surface, but slightly rare.
Drops: Bone (0-2), Arrow (0-2), Bow (1) (Rare) (Skeleton). String (0-2), Spider Eye (0-1). (Spider).

Creeper:
HP 20.
Attack range: Close range.
Damage: 49 (24.5 hearts) (Assuming you get hit head on.)
Found: Almost everywhere.
Drops: Gunpowder (0-2) (Non explosion). Music disc (1) when killed by a skeleton.
XP: 5.

Ghast:
HP: 10 (5 hearts).
Attack Range: Long range, medium range.
Damage: Varies, maximum is 17. (8.5 hearts).
Found: In the nether.
Drops: Gun powder (0-2), Ghast tear (0-1).
XP: 5.

Magma Cube (Small).
HP: 4 (2 hearts).
Attack range: Close range.
Damage: 4 (2 hearts).
Found: In the nether.
Drops: Magma Cream (0-1).
XP: 2.

SilverrFish:
HP: 8 (4 hearts)
Attack range: Close range.
Damage: 1 (0.5 hearts)
Found: In mines.
Drops: None.
XP: 5.

Skeleton:
HP: 20 (10 hearts).
Attack Range: Medium - Long range.
Damage: 3-4. (1.5-2 hearts.)
Found: Everywhere.
Drops: Arrow (0-2), Bone (0-2). Rares: Bow (1), Enchanted bow. (1).
XP: 5.

Slime (Small):
HP: 4 (2 hearts).
Attack range: Close range.
Damage: 2 (1 Hearts).
Found: Underground, and on super flat world type.
Drops: SlimeBall (0-2).
XP: 2.

Zombie:
HP: 20 (10 hearts).
Attack range: Close Range.
Damage: 4 (2 hearts).
Found: Everywhere.
Drops: Rotten flesh (0-2). Rares: Iron ingot, Iron helmet, iron shovel, and iron swords.
XP: 5.

Thats about it, thanks for reading, and GL kicking Mob butt!! :D