Liger
Panthera leo x Panthera tigris
What you should know
A liger is born when a male lion dad and a female tiger mom have a cub together, and they only exist in zoos or private sanctuaries because lions and tigers do not share the same wild habitat. Ligers grow to be the largest cats in the world, much bigger than either parent. They are powerful predators and very dangerous, so they should never be approached.
Whoa
Ligers can weigh over 900 pounds, making them heavier than a full-grown lion and tiger put together and the largest cats ever recorded on Earth.
Staying safe around it
Treat it with respect, keep your distance, and tell a grown-up if you see one up close.
Always ask a grown-up before you touch any animal or plant. If something bites or stings you, tell an adult right away.
Source: San Diego Zoo
Read more about the liger at Wikipedia.