Creationists are forever asking questions along the lines of:
If humans evolved from monkeys, how come there are still monkeys around?
Such questions betray a deep misunderstanding of how evolution works. It's a bit like asking:
...in short, not all ‘monkeys’ evolved into humans.
For a more detailed answer to this question, please see:
FAQ: If humans evolved from monkeys, how come there are still monkeys around?