Why is it doing that? : Medieval Panthers
Today, we know that a panther looks like a big kitty. Often black in color. Nothing too spectacular (except that they're fabulous creatures in their own right). But in the Middle Ages, people believed panthers were multicolored!
Several bestiaries state that the panther is known to have a big feast and then sleep in a cave for 3 days afterward. After its nap, it wakes up and eminates a sweet odor, which attracts a creatures the panther preys on (the only notable exception is the dragon, which is immune).
Some medieval people used the panther as an allegory for Christ. The 3 day sleeping period represents the 3 days Jesus spent in the tomb ("on the third day he rose from the grave..."). But there are some other similarities:
The sweet smell that attracts all creatures to the panther represents the way Christ draws all people to him.
The dragon, which is the enemy of the panther, represents Satan.
While the whale uses a sweet smell to deceive, the panthers sweet smell is indicative of its holiness. Sweet smell is associated with holiness, especially when it comes from the uncorrupted body of a saint after death.
Not all panthers were depicted as multicolored, but a lot were! Some scholars suggest the colors represent the multi-faceted nature of Christ (man, god, etc), and I've been in discussion groups that suggest the colors might be medieval people's way of describing iridescence.
There's a famous Old English poem from the Exeter Book about the Panther. It's one of the three Physiologus poems that I described in my post about medieval whales. You can read a translation of the poem here: