Mobs changelog:

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chest (ender) - mr. saturn
chest (main) - present turned sideways
arrorw - selfmade
end portal - sky from magicant
explosion - boom from skyrunner crash
minecart - wheelbarrel from mine in eb
sign - from eb 
boat - boat from eb
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cow - eb cow
cat (black) - cat from eb
mooshroom - eb blue cow
creeper - robopump
enderman - shark
ghast - squatter deamon
pig - pig from mother 3
skeleton - cheerful skeleton from mother 3
wither skeleton - cheerful skeleton from mother 3
slime - worthless protoplasm
magmacube - self consuming flame
cave spider - arachnid II 
spider - arachnid 
villagers - misc sprites from eb
zombie - undead zombie
zombie villager - zombie man from mother 3
bat - mr.batty
blaze - psychic psycho
iron golem - dungeon man
snowman - snowman from magicant
squid - kracken
chicken - madduck
zombie pigman - pigmask
wolftame - king
wolfwild - desertwolf
witch - tranny from mother 3
silverfish - coil snake
wither - eb end boss
guardian/elder - kraken eb
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sheep - [not started]
enchanting table book - [not started]
lead knot - [not started]
beacon beam - [not started] will be death warp thing from mother 2
endercrystal - may not do
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Horse - Not doing