Read the excerpt from The Secret Garden:

“Why does it make you angry when you are looked at?” she inquired one day.

“I always hated it,” he answered, “even when I was very little. Then when they took me to the seaside and I used to lie in my carriage everybody used to stare and ladies would stop and talk to my nurse and then they would begin to whisper and I knew then they were saying I shouldn’t live to grow up. Then sometimes the ladies would pat my cheeks and say ‘Poor child!’ Once when a lady did that I screamed out loud and bit her hand. She was so frightened she ran away.”

“She thought you had gone mad like a dog,” said Mary, not at all admiringly.

“I don’t care what she thought,” said Colin, frowning.

What is the meaning of the figurative language “mad like a dog”?

dreadfully sad

righteously angry

out of control

having strong instincts