Ligers and Tigons and Napoleon Dynomite, Oh My!

There is a scene in Napoleon Dynamite where Napoleon is drawing a Liger and he says it's 'pretty much my favorite animal' or something like that. A Liger is the product of breeding a male lion and a female tiger. A Tigon is a result of the mating of a male tiger and a female lion. I had no idea there were actually such animals. Here is the Wikipedia definition. The picture above is a Liger.




The picture on the right is of two Tigons.









There are also Li-Tigons, Ti-Ligers, Ti-Tigons and Li-Ligers.

Weird.



EDITED TO ADD:
A commenter asks how there can be Li-Tigons, etc. if the Ligers and Tigons are sterile. The Wikipedia article states, 'Male ligers are usually sterile. Female ligers are often fertile and can be mated to a tiger resulting in ti-liger offspring or to a lion resulting in li-liger offspring.'