In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Passage: The story opens when the fox is seen sneaking from atop a hill down to a farm. As he is walking, he narrates the story to the viewer. His first line is like: "As the last light went out, I knew my chance had come, to get at those chickens". After his first attempt and fail at stealing the chickens and being caught by the watch dog, he decides a different approach. To gain the friendship and trust of the bulldog, the fox shaves his tail and pretends to be a hard-luck terrier looking for a place to live. Unbeknown to the fox, The bulldog instantly sees through the fox's ploy but acts as though he's fooled. He agrees to share his home with the fox. At night, the fox sneaks into the chicken coop to steal one of the hens. The dog disguises himself as a huge chicken, which the greedy fox takes, and when the bulldog reveals himself beneath the disguise, the fox bolts and runs to a highway, where he hitches a ride on a passing truck, not noticing that the truck belongs to a fox furrier company.
Which animal disguised himself second?