Headcrumbs Mod 1.7.10, 1.7.2 adds:

• -Vanilla mobs/animals heads (including horses)
• -Blizz heads (mob from Thermal Expansion)
• -Twilight Forrest heads
• -Natura mobs heads
• -Thaumcraft mobs (Pretty much all of the ones that actually have a head)
• -Lycanite's Mobs heads
• -Primitive Mobs heads
• -Grimoire of Gaia heads
• -Laser Creeper Robot Dino Riders From Space heads
• -Minecraft celebrities heads as dungeon loot
• -All of the heads added by this mod are wearable!
• -MOBS! Find your favourite modder/youtuber/streamer/friend as a mob in the world! But careful, they don't like
• you! (and I don't blame them, look at yourself). Any names added to the config file will also spawn in the world!