Visible crew/equipment: Near the beginning of the film while Clarice is being interviewed, we can see a black T-shape during a shot of the floor. This is shown to be an actor's mark, as someone steps right into it a few shots later. (00:12:58)
Revealing mistake: During the scene in which Krendler shows the fake Lecter postcard, look closely and you can read the line: "Sounds like him to me" although this line is part of Krendler's speech, and not part of the message itself. Forgetting your lines, Mr. Liotta? (01:21:55)
Answer: The implication is that the boars are afraid of Lecter, which is why they don't attack him - he shows no fear and exudes dominance.
Sierra1 ★
Next to that the pigs are trained to attack anything that screams. Hannibal stayed calm and thus was ignored.
lionhead
Didn't Verger describe the pigs (by mentioning their molars and incisors) to Lecter when he was first brought to Verger strapped to the dolly?
He also didn't scream or make noise to get their attention.
I'm inclined to agree here. The boars could sense that Lecter was the most savage predator in the pit, and the animals steered clear of him for that reason. Call it "professional courtesy."
Charles Austin Miller