Mob-Spider

A spider is a mob which can come in 3 different forms, the regular form, a spider jockey or a cave spider. A spider dosen't die in light, it becomes neutral unless atacked. But when at night or underground it will be hostile.

How to kill
Shoot with a bow and arrow.

Attack with a axe/sword

Walk it into cacti

Drops
A spider drops string which is used to make bows, fishing rods and more.

It also drops spider eyes if attacked by a player. Also, it drops 5exp orbs.

Trivia
Spiders can see through blocks

They can climb walls

If you put the invisibility potion on the spider you can still see the glowing, red eyes.