Can a Black Panther Mate with a Leopard?

Since the black panther is simply a black form of leopard, these can breed with regular spotted leopards. The offspring are not hybrids.

Can a leopard give birth to a black panther?

It is possible for a spotted leopard and black panther to be born in the same litter. Both jaguars and leopards can be black or nearly so. The trait is most common in dense forests.

Can a panther and a jaguar mate?

When they mate with another black panther, then the result is more black panther cubs. If they mate with a tan jaguar, then they could have either black cubs or tan cubs. The distinction is that a tan jaguar cannot have black cubs on its own.