I HATE WHEN MY FRIEND SUDDENLY TRY TO SING ANNOYING MUSICS

Well sometimes i am wild and violent, but in the truth i am very relaxed, calm and gentle
BUT IT'S BETTER YOU BE CAREFUL - I'M REALLY LIKE A WILD ANIMAL
for example
One year ago a friend tryied to bother me, so i scratched him, and the marks of the scratch still today in his arm, i warned him. Now he's a bit afraid of me. (= w =) ~normal days
IT WAS A DEEP SCRATCH USING MY NAILS
That's why all my friends say that i am a type of cat, i agree.