Tami has answered you well on many things. There is but two things that I would differ on. I would have to say yes. Just by Jesus being able to be tempted he is of a sinful nature. To be human is to have a sinful nature with no exceptions.
Wolves have a wild nature.
You could domesticate it all you want and he could be good and calm until he is dead, that would not take away the FACT that he had a wild nature. He just over came it. Jesus never acquired our sinful nature because God cannot have a sinful begotten son, impossibility with our God. Jesus acquired a sinful nature the same time that we did. As soon as we are born.