If God is perfect then everything he creates is perfect. Cut and dry. This statement both asks and aswers the same question.
Even with humans. Because humans are given free will, even in sin we are perfect because we are acting in accordance with the way we were created.
This however, begs the question; If everything God creates is perfect, and we were created by God, then we too are perfect, and everything we create must also be perfect. Thus everything, every object, every living organism, every spec of matter that makes up this universe is perfect. Tihs fuxing grmmar iz prfct.