An animal in me

My dog is an Germany shepherd. this dog has diferent colors: black, broun, white and beige. Her name is Sim she is a good vigilant dog, but sometimes is a lot of nervious.
I like spend a litle time everyday with her, and we go in the park, she enjoys very much, and me too.
I think that Sim seems to me, because she is living in my house since it was a puppy. I showed her to defended it self, and it is a quality that I have also.