Lili (feline)
Encyclopedia
A lili is the offspring of a liger
Liger
The liger is a hybrid cross between a male lion and a tigress . Thus, it has parents with the same genus but of different species. It is distinct from the similar hybrid tiglon. It is the largest of all known cats and extant felines.Ligers enjoy swimming, which is a characteristic of tigers, and...

 and a lion. Only female ligers are fertile, as according to Haldane's rule
Haldane's rule
Haldane's rule or Haldane's law was formulated in 1922 by the British evolutionary biologist J.B.S. Haldane. It describes hybrid sterility in species and is extended to describe speciation in evolutionary theory, in two parts: the rule of hybrid sterility and the rule of hybrid inviability...

, in hybrids of animals whose sex is determined by sex chromosomes, if one is sterile, rare or absent, it is the heterogametic sex (different sex chromosomes) - so for the liger it is the male (XY). This means that a female liger can only mate with a male lion, which produces a lili.
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