But there is one haunting sign that Georgia might have endured the most abuse of any of the 47 surviving pit bulls seized last April from the property of the former Atlanta Falcons quarterback Michael Vick in connection with an illegal dogfighting ring.

Georgia has no teeth. All 42 of them were pried from her mouth, most likely to make certain she could not harm male dogs during forced breeding.

Her caregivers here at the Best Friends Animal Society sanctuary, the new home for 22 of Mr. Vick’s former dogs, are less concerned with her physical wounds than her emotional ones. They wonder why she barks incessantly at her doghouse and what makes her roll her toys so obsessively that her nose is rubbed raw.

“I’m worried most about Georgia,” said the Best Friends veterinarian Dr. Frank McMillan, an expert on the emotional health of animals, who edited the textbook “Mental Health and Well-Being in Animals.” “You don’t have the luxury of asking her, or any of these animals: ‘What happened to you in your past life? How can we stop you from hurting?’

Garrett Davis for The New York Times

John Garcia, a caregiver at the Best Friends sanctuary, tries to teach abused dogs to trust people.

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