These snakes spit out guinea pigs, the guinea pigs blow chewing gum bubbles. When the bubbles burst on an animal, you have conquered the animal. Sometimes the bubbles are strong enough to move objects like branches in order to reach the animals. There are switches, try them and see what they do. Conquer as many animals as possible with the least amount of guinea pigs. Make sure you don't take too long, so you get a lot of credits and medals.
Click on the snake at the right moment with your mouse. .