As a Druid with multiple per-day uses of Wild Shape, can I "cross shape" directly from one wild form into another without going through my humanoid form first? (Say, starting off as a bird perched on a treelimb and then shaping directly to a panther, or jumping into the water as a wolf and then shaping directly to a fish.)
The creature retains the spell-like abilities and supernatural attacks of its old form.
Wild Shape is a Supernatural ability, and thus, is retained while wild shaped. So, as long as you still have more uses to burn, you can wild shape while you wild shape.
*Except for minor details that are not relevant to this question.