They all have hearts
Yes.. tiny ones
Each level will increase the heart damage lost by 1.25 hearts when you hit spiders, cave spiders, or silverfish. Use: (all using a diamond sword with Bane or Arthropods V) Spiders will be killed with 2 hits (one hit dealing 11.5 hearts, the other finishing it off) instead of... 2 hits? (that's right, normal diamond swords hit 8 hearts without enchanting. Spiders have 16 hearts.) Cave Spiders will be killed with, sadly 2 hits again (11.5 < 12) so no efficiency here. Silverfish will be killed with 1 hit (silverfish have 8 hearts) and... yeah you see where i'm going with this. Essentially, if you can build an enchantment table, you can probably build a diamond sword, so this is a useless enchantment for most purposes.
not all spiders are black. there are many many MANY different colours
There are many spiders. Two are tarantulas, and black widow spiders.
26 spiders
They have 5 hearts. =)
They have three hearts
The Golden Spiders has 186 pages.
lol dray it would take forever to smash all the poor innocent spiders but who cares how many spiders there are in the world
A funnel spider has eight legs, as do all spiders.
Five hearts