Black panthers

Panthers aren't animals they're a group of big cats: lions, tigers, leopards and jaguars.
But what about the black panther?
Just like the white tiger, the black panther is actually a black jaguar or leopard.
If you look close you can see darker arias which are those spots which leopards and jaguars have.
Lots of animals have these problems of fur discoloration or having black fur.