Which big cat is also known as a panther?

The term "panther" can refer to a few different big cats, depending on the context. It is most commonly used to describe two specific species:

* Black Panther: This is actually not a distinct species, but a melanistic (black-furred) form of either a leopard or a jaguar.

* Florida Panther: This is a subspecies of cougar found in the Florida Everglades.

So, to answer your question more directly: a leopard or a jaguar can be called a panther if they have a black coat.