Dogs
The main thing with Japanese dog emoticons is the ears. Use a U for big floppy ears, u for little ears or even V’s for ears as well. You can also use ∵ on either side of the mouth to make it look more dog like.
Uo･ｪ･oU
∪･ω･∪
U｡･ｪ･｡U
▽・ω・▽
▽・ｗ・▽
Ｕ^皿^Ｕ
ｖ・。・Ｖ
ＵＴｪＴＵ
(^・(I)・^)
U・♀・U
ｏ（Ｕ・ω・）⊃
(^・x・^)
(U・x・U)
▼o・ェ・o▼
U＾ェ＾U
U￣ｰ￣U
┌U･ｪ･U┘
└@(･ｪ･)@┐
ヾ(●ω●)ノ
(〓￣(∵エ∵)￣〓)

Drinking
You can basically take any Japanese emoticon and add cups to it with a 口, 旦 or 且.
ｏ口(・∀・ )
(。・・)_且
且_(ﾟ◇ﾟ；)ノﾞ
~旦_(^O^ )
( ゜Д゜)⊃旦
( ´･ω･`)_且~
( ^-^)_旦""
(*^◇^)_旦
(*‘▽´)_旦~~
~(=^¨^)_旦~
(＾-＾)＿日
~~旦_(･o･;)
( -_-)旦~
(＃´ー´)旦
且_(・_・ )

Evil/Plotting/Sneaky
For evil looking Japanese emoticons you pretty much want to use ‘ and ´ for the eyes. You can use pretty much anything else for a mouth and other elements and it’ll still look evil.
(・‘ω´・)
ψ(‘∇´)ψ
（‘ー´）
(｡･‘ω´･｡)
o(‘ω´*)o
| ‘Д´|
(‘ε´)
(σ-`д･´)
(‘Д´*)
（=‘〜´=）
(ﾒ‘ﾛ´)/
Ψ(‘▽´)Ψ
^(#‘∀´)_Ψ
(*-`ω´- )人
(ц‘ω´ц*)
(‘∀´)Ψ
ψ(*‘ー´)ψ
Ψ(‘◇´)Ψ
“ψ(‘∇´)ψ

Fish and Sea Creatures
Japanese fish emoticons are somewhat different as they’re from the side and very much look like swimming fish. You can add or subtract brackets to change the length of the fish. It’s also very easy to make crabs as well.
<*)) >>=<
>゜))))彡
<゜)))彡
<+ ))><<
<_)))彡
>_)))彡
>^)))< ～～
(°)#))<<
<・ )))><<
ζ°)))彡
（：。）ミ
Ｃ：。ミ
<ニ：ミ
(Q )) ><ヨヨ
(°))<<
>°))))彡
≥〔゜゜〕≤
ミ(・・)ミ
V=(° °)=V
＜コ：ミ
(゜))<<<*))
ミ[°°]ミ
くコ:彡
ミ．．ミ

Friends
These emoticons are really just happy looking ones holding up their hands to each other. You can combine pretty much any emoticons and join their hands together with a 人, /＼ or メ.
ヽ(∀゜ )人( ゜∀)ノ
(*･∀･)／＼(･∀･*)
＼（＾∀＾）メ（＾∀＾）ノ
＼（★´−‘）人（´▽‘★）／
（ ＾＾）人（＾＾ ）
(〃⌒▽⌒)八(〃⌒▽⌒〃)八(⌒▽⌒〃)
☆-(ノﾟДﾟ)八(ﾟДﾟ )ノ
( ｡･_･｡)人(｡･_･｡ )
ヽ(*^ｰ^)人(^ｰ^*)ノ
━(○´ｴ‘)(´ｴ‘●)━
(◎‘・ω・´)人(´・ω・‘*)
｡*:★(´・ω・人・ω・`)｡:゜★｡
(*´∀‘*人*´∀‘*)
（＾▽＾）／＼（＾▽＾）
（*＾ω＾）人（＾ω＾*）
ヽ(○´∀)乂(*´∀`*）乂(∀`●)
＼（＾∀＾）メ（＾∀＾）ノ
ヽ(´Д‘)人(´Д‘)人(´Д‘)ノ〜♪
(((*°▽°*)八(*°▽°*)))♪
♡(*´∀‘*)人(*´∀‘*)♡
(〃￣д￣)八( ￣д￣ )八(￣д￣〃)
ヽ(＾▽＾)人(＾▽＾)人(＾▽＾)ﾉ
(((＠°▽°＠)八(＠°▽°＠)))
(･_･")/＼(･_･")
(○‘ε´○)／＼(○‘ε´○)
ヘ( ^o^)ノ＼(^_^ )
(/^-^(^ ^*)/
( 。・_・。)人(。・_・。 )
(・_・)〆＼(Ｔ＿Ｔ）
(^^)-(^^)-(^^)-(^^)-(^^)
ヽ(´Д‘)人(´Д‘)人(´Д‘)ノ
ヾ(￣ー￣)X(^∇^)ゞ
♪ヽ( ⌒o⌒)人(⌒-⌒ )v ♪
(*^o^)人(^o^*)
＼( ^o)( ^ 0 ^ )(o^ )／
ヽ（ ＾＾）人（＾＾ ）ノ
(・_・")／＼(・_・")
└(^o^ )Ｘ( ^o^)┘
(＾○＾)オ(＾▽＾)ハ(＾０＾)ツ～
( ⌒o⌒)人(⌒-⌒ )v
(°◇°人°◇°)

Greetings or Goodbyes
These are pretty much standard happy or joyful emoticons usually with a forward or back slash for an arm. You can also use characters such as ヾ to make it seem as if the emoticon is shaking it’s arm.
ヾ(＾∇＾)
(^-^*)/
( ﾟ▽ﾟ)/
( ^_^)／
(^o^)/
(^ _ ^)/
( ´ ▽ ` )ﾉ
(ﾉ´∀‘*)ﾉ
(ヾ(´･ω･‘)
☆ﾐ(o*･ω･)ﾉ
＼(＾▽＾*)
(*＾▽＾)／
(￣▽￣)ノ
ヾ(-_-;)
ヾ( ‘ – ‘*)
ヾ(＠⌒ー⌒＠)ノ
~ヾ ＾∇＾
~ヾ(＾∇＾)
＼(￣O￣)
(｡･ω･)ﾉﾞ
(*^･ｪ･)ﾉ
(￣∠ ￣ )ﾉ
(*￣Ｏ￣)ノ
ヾ(｡´･_●･`｡)☆
(/・0・)
(ノ^∇^)
(,, ･∀･)ﾉ゛
(。･д･)ﾉﾞ
＼(°o°；）
(｡´∀‘)ﾉ
(o´ω`o)ﾉ
( ･ω･)ﾉ
(。^_・)ノ
( ・_・)ノ
＼(-o- )
(。-ω-)ﾉ
＼(-_- )
＼( ･_･)
ヾ(´￢‘)ﾉ
ヾ(☆▽☆)
(^ Q ^)/゛
~(＾◇^)/
ヘ(‘◇’、)/
ヘ(°◇、°)ノ
ヘ(°￢°)ノ
ヘ(゜Д、゜)ノ
（ ゜ρ゜)ノ
ー( ´ ▽ ` )ﾉ

Happy/Joyful
For happy looking emoticons you usually want to use eyes that are high up. The best characters to use for these are ^, ´, ‘, or ⌒ among others. The best characters to use for mouths are ones like ▽, ∀ or ω if you want to be cute. You can also add * or # for rosey cheeks or add waving arms with things like \, /, ヽ or ﾉ. You can also always throw in stars or hearts too.
(●´∀‘●)
(‘・ω・´)”
ヽ(；▽；)ノ
(*´・ｖ・)
(((o(*ﾟ▽ﾟ*)o)))
☆*:.｡. o(≥▽≤)o .｡.:*☆
(⌒▽⌒)☆
⊂((・▽・))⊃
(≥∇≤)/
(´∇ﾉ‘*)ノ
（・◇・）
( ´ ▽ ` )ﾉ
（＾_＾）
（￣ー￣）
(*^▽^*)
(＾▽＾)
(´･ω･`)
（’-’*)
∩( ・ω・)∩
(*≥▽≤)
＼（＾ ＾）／
Ｏ(≥∇≤)Ｏ
（ ´∀‘）
(^～^)
＼（＠￣∇￣＠）／
(☆^O^☆)
(★^O^★)
(☆^ー^☆)
(´ω‘★)
＼（Ｔ∇Ｔ）／
ヽ(*≥ω≤)ﾉ
*(*´∀‘*)☆
Ｏ(≥▽≤)Ｏ
ヽ(*⌒∇⌒*)ﾉ
d=(´▽‘)=b
＼(*T▽T*)／
ヽ(‘ ∇‘ )ノ
（*＾ワ＾*）
ヽ(＾Д＾)ﾉ
(´∀`)
(°◇°;)
(゜▽゜;)
(/^▽^)/
(ﾉ´ｰ`)ﾉ
ヽ(´ー`)ﾉ
( ＾∇＾)
＼( ‘.∀´)／
(●⌒∇⌒●)
o(≥∇≤o)
ヽ(‘◇´)/
ヽ(*・ω・)ﾉ
（＾ω＾）
｡◕‿◕｡
⊙ω⊙
⊙△⊙
⊙▽⊙
o (◡‿◡✿)
(◕‿◕✿)
(∩_∩)
｡◕‿◕｡
(•ิ_•ิ)
(/•ิ_•ิ)/
（ΦωΦ）
（*＾＾*)
（＾⊆＾）
(-^〇^-)
(ノ*゜▽゜*)
ヾ(´▽‘;)ゝ
(゜▼゜＊）
(￣个￣)
＼(^▽^＠)ノ
("⌒∇⌒")
へ(゜∇、°)へ
（-＾〇＾-）
（＞ｙ＜）
ヽ(^。^)丿
(ヘ。ヘ)
（＾ｖ＾）
ヾ(@^▽^@)ノ
ヾ(@°▽°@)ノ
ヾ（＠＾▽＾＠）ノ
ヾ(＠^∇^＠)ノ
o((*^▽^*))o
ヾ(@゜∇゜@)ノ
ヾ(＠゜▽゜＠）ノ
（＠´＿‘＠）
ヾ(＠† ▽ †＠）ノ
(ノ＞▽＜。)ノ
＼（＠；◇；＠）／
＼(☆o◎)／
(((＼（＠v＠）／)))
(°◇°;)
(゜▽゜;)
(o;TωT)o
ヽ(;^o^ヽ)
（⌒▽⌒ゞ
"ヽ(´▽‘)ノ"
(((o(*ﾟ▽ﾟ*)o)))
ヾ(＠⌒ー⌒＠)ノ
Ψ(´▽‘)Ψ
（ｖ＾＿＾）ｖ

Hiding
You can take pretty much any emoticon and cut it in half or into some other size with a | to make it seem as if it’s peaking out from behind a wall.
|･ω･‘)
ﾍ(･_|
｜−・;）
|ω・）
|_・)

Infatuation/In Love
For Japanese emoticons that express infatuation or love you pretty much just need to add hearts to happy looking emoticons. You can also add rosey cheeks or even the Chinese character for love, 爱.
(´∀‘)♡
(‘∀’●)♡
（*´▽‘*）
(*°∀°)=3
（´ω‘♡%）
ヽ(爱´∀‘爱)ノ
♡o｡.(✿ฺ｡ ✿ฺ)
(｡･ω･｡)ﾉ♡
（●´∀‘）ノ♡
♡＾▽＾♡
(｡-_-｡ )人( ｡-_-｡)
(●♡∀♡)
（＿´ω‘）
(´ ▽‘).。ｏ♡
(o⌒．⌒o)
（人´∀`*）
（〃・・〃）
♥（ﾉ´∀`）
(ღ˘⌣˘ღ)
(｡’▽’｡)♡

Kissing
For kissing emoticons you usually want to use something like ￣ or – for closed eyes. For a mouth use either ε or з. You can even add a "chuu" which is the Japanese sound for a kiss or you can write it in Katakana by using チュー.
(´ε‘ )♡
～(^з^)-☆
|°з°|
（＿ε＿）
(‘ε’)
|(￣3￣)|
（￣ε￣＠）
（*＾3＾）
(´ε‘*)
(○´3‘)ﾉ
(☆´3‘)
(*￣з￣)
(づ￣ ³￣)づ
（○゜ε＾○）
(TεT)
(-ε- )
（＠ーεー＠）
（*＾3＾）/～☆
ლ(|||⌒εー|||)ლ

Laughing
These are essentially happy looking emoticons with an open mouth.
（・∀・）
（ ´∀‘）
（⌒▽⌒）
（＾ｖ＾）

Mellow/Whatever
The key to mellow looking Japanese emoticons is pretty much just having arms pointing upwards with \, /, ┗, ┛ or ノ.
ヽ（´ー‘）┌
┗┐ヽ(′Д、`*)ﾉ┌┛
ヽ( ´¬`)ノ
┗┃・ ■ ・┃┛
ヾ(´A‘)ノﾟ
ヽ（・＿・；)ノ
ヽ( ￣д￣;)ノ
＼（〇_ｏ）／
ヽ(。_°)ノ
＼(;´□‘)/
ヾ(*´ー`)ノ
ヽ(‘ー`)ノ
ヽ(ー_ー )ノ
ヽ(´～‘；）
┐(‘～`；)┌
ヽ（*ω。）ノ
(;´・`)>
（＾～＾）

Monkeys
You can easily make Japanese monkey emoticons by using @ symbols for ears. You can use pretty much any face and just add @ signs to make it into a monkey.
@(o･ｪ･)@
└@(･ｪ･)@┐
@(｡･o･)@
@(o･ｪ･o)@
@(/o･ｪ･o)@/
@(*^ｪ^)@

Moustache
You can basically take any of these emoticons and add a ┏ and a ┓ around the mouth to give it a somewhat Chinese looking moustache.
(´┏o┓‘)
ﾐ(´┏ω┓‘)/
(´┏･┓‘)
(￣┏Д┓￣°*)
(￣┏Д┓￣ )
( ￣┏＿┓￣)
(ノ≥┏Д┓≤)ノ
(￣┏∞┓￣)

Painful
In addition to this one painful looking Japanese emoticon you could probably add stars to angry looking emotions.
☆⌒(＞。≪)
☆￣(＞。☆
~(>_<。)＼
ヘ(><#)ノ
(。_＋)＼
(xLx)ヾ
/(*ι*)ヾ
(ノ><)ノ
／(x~x)＼
◎☆（♯××）┘
ヘ（。□°）ヘ