Is lion head bigger than a tiger?

That's a tricky question to answer definitively! It depends on what you mean by "bigger":

* By weight: Tigers are generally heavier than lions. The Siberian tiger, for example, is the largest cat in the world, and can weigh up to 700 pounds. Male lions, on the other hand, usually weigh between 330-550 pounds.

* By length: Lions are generally longer than tigers. While Siberian tigers can reach lengths of 10-11 feet, male lions can reach up to 10 feet long.

* By head size: While both species have impressive heads, tigers tend to have slightly larger heads, particularly in the case of the Siberian tiger.

So, depending on what metric you use, you could argue that either the lion or the tiger has a bigger head.