How to Tame a Hydra on Scribblenauts

Open the spawn menu and input the word "hydra." This will allow you to place a hydra anywhere in the game environment.

Place the hydra about a screen away from the character. The hydra is initially hostile to the character and will attempt to kill the character if it is too close.

Return to the spawn menu and spawn three pieces of meat. Place each piece next to the hydra and it will eat them one at a time. After consuming the third piece of meat the hydra will fall asleep. When it wakes up, it will be friendly and tamed.