The tigon or tion

Panthera Leo x Panthera Tigris

A hybrid is an animal whose parents are from a different species. Because the parents are from a different species, by definition the cubs will be infertile (in case of the tigon, only the males are infertile). This means that a female tigon can copulate with a lion or a tiger and the product will be a li-tigon or a ti-tigon. So the tigon as a species cannot reproduce itself(this is one of the biological proofs that lions and tigers are a different species).

Tigons, in contrast with ligers, are the cubs of a male tiger and a female lion. Lions and tigers live in totally different biotopes; in the wild they will never meet and therefore never copulate.

The tigon is smaller than both the lion and the tiger, because the gene responsible for growth is 'double present' (meaning the product of these genes generates a smaller animal).