Spawn eggs

Spawn eggs are eggs that spawn mobs and animals

the animals are:
 * 1) wolves (can be mobs)
 * 2) pigs
 * 3) sheep
 * 4) cows

and the mobs are:
 * 1) nether eyes
 * 2) zombie
 * 3) zombie pig man
 * 4) blaze
 * 5) crepper
 * 6) Ghast
 * 7) slimes