Here are a few creative methods on catching a lion:

Newton**'s Method:*

Let, the lion catch you. For every action there is equal and opposite reaction. Implies you caught lion.

Einstein Method:*

Run in the direction opposite to that of the lion. Due to higher relative velocity, the lion will also run faster and will get tired soon. Now you can trap it easily

*Software Engineer Method:*

Catch a cat and claim that your testing has proven that its a Lion. If anyone comes back with issues tell them that you will upgrade it to Lion v.2 but only if you can come onsite!

Indian Police Method:*

Catch any animal and interrogate it & torture it to accept that its a Lion. Now lets kill the lion…

George Bush method:*

If the lion is a terrorist and has a lot of oil in his control, link the lion with Osama Bin Laden and shoot him! However, if he has no oil and is willing to sell his country to you, make him your "favored ally".