Hi chaoticnuketral, sorry for the late reply (i'm getting married in a week, so i really don't have a minute for me anymore ^^ ). For the music, i hope i can improve myself one day ^^.
About the rat's animation, i 'm not sure i've done something very realistic, maybe it's look like an animation of a cartoon dog or something... :-P
Thank you again for your interest in my games ! Can i follow you on twitter or something ?