Ever wanted to make a custom spawn egg to spawn your own mob? Well today I will be telling you how!

To make a custom spawn egg, you have to add the EntityTag to a spawn egg. For example,

/give @p spawn_egg 1 0 {EntityTag:{id:"minecraft:zombie"}}

That gives you a zombie spawn egg. If you want to add tags to the mob you spawn, just add a comma after the 2nd quote.

/give @p spawn_egg 1 0 {EntityTag:{id:"minecraft:zombie",CustomName:"Bob The Zombie"}}

You can also add armor, weapons, and even mob drops! That's for another time though.
Thanks for reading!

NOTE TO ALL USERS:

This will not work for boss mobs, items, and arrows/xp bottles/potions/snowballs etc.
-Grim