For number one I have a body swap- where Dean gets a first hand feel for what it is like for tall Sam in a humorous way. :)
Freaky Friday can be found here
http://www.supernaturalville.net/viewstory.php?sid=4377
or here
http://www.fanfiction.net/s/4941908/1/Freaky_Friday

For # 2 this is close to what you asked... it has Hurt Sam and animal transformed Dean...
http://www.fanfiction.net/s/3614269/1/Sacrifice_of_the_Heart
Another good hurt Sam animal transformation Dean...
http://www.supernaturalville.net/viewstory.php?sid=546

And for #5
http://www.fanfiction.net/s/3685256/1/Its_Always_the_Quiet_Ones