Lion:
Lions are the only cats that live in groups, which are called prides. Prides are family units that may include up to three males, a dozen or so females, and their young. All of a pride’s lionesses are related, and female cubs typically stay with the group as they age. Young males eventually leave and establish their own prides by taking over a group headed by another male.

Crocodile:
The Nile crocodile has a somewhat deserved reputation as a vicious man-eater. The proximity of much of its habitat to people means run-ins are frequent. And its virtually indiscriminate diet means a villager washing clothes by a riverbank might look just as tasty as a migrating wildebeest.

Cobra Attacks Chameleon - The Most Venomous Snake
http://www.youtube.com/watch?v=NOEToe90Ego

Roadrunner Attacks Rattlesnake - Exclusive Video
http://www.youtube.com/watch?v=1IvM3NJ_2fA

Wild Dogs Attacks Hyena - Wild Dog vs Hyenas
http://www.youtube.com/watch?v=MqWBArq3Z8g

Lion vs Rhino - Real Fight #HD
http://www.youtube.com/watch?v=8Hz_7EKwHxI

Spider vs Snake - Spider Eats Snake #HD
http://www.youtube.com/watch?v=Wca71B8BGY0

Lion vs Buffalo - 9 Lion Attack 1 Buffalo #HD
https://www.youtube.com/watch?v=T9BncSXEVJk

Cobra vs Mongoose Fights #HD
https://www.youtube.com/watch?v=Jk9Z_YGcHkU