This is a question for Christians who believe in evolution. It has multiple aspects:
1- Biblically, is there a difference between animals and humans ?
2- If there are no differences, then why would God regard humans as anymore special than other animals ?
3- If there is a difference, what is it ?
4- If this difference is that humans are thelogically in God's image, then at what point along their evolutionnary progression did they become 'in God's image' ?
Obviously, this topic won't interest atheists, sorry if it is a bit exclusive to christians, but this is a question I have been asking myslef for quite some time.