Fierceness; temper; anger; In Christian symbolism it represented power to protect against evil. See: leopard.
Useful questions are:
What attitude or feelings is my dream panther expressing, and how does that relate to me?
If I imagine myself as the panther, do I feel anger, power or fear? (For help doing this see Stand in Role under peer dream work.)
Is it a male or female panther and what does that lead me to feel or associate with it?
What is my relationship with the panther and what does that suggest?