Hey guys, today I'm going to show you how do you get player or/and mob heads by using the /give command without any mods activated!

EXAMPLE FOR PLAYER HEADS:
/give Player 397 1 3 {SkullOwner:"Username"}

-Instead of Player type in YOUR minecraft nickname, and instead of username type in the username of the player which has the head you want to get. Make sure every word in the command is case-sensitive and the quotation marks in the command are needed if you want it to work properly.

EXAMPLE FOR MOB HEADS:
/give Player 397 1 3 {SkullOwner:"MHF_Blaze"}

Pretty much the same, change the Blaze to any mob name you want, but make sure you added MHF_ (Marc's head format) in front of it. There are also special heads such as MHF_Cactus, MHF_ArrowUp, MHF_ArrowDown or MHF_Chest-There's a little bit more but you can see it on the snapshot and you'll probably know the heads on it.

Hope i helped you! If you got any questions, comment down below-See ya!