In this December 2018 file photo provided by Wolf Park, intern Alexandra Black pets Niko the wolf at Wolf Park in Battle Ground, Ind. A witness told authorities that a gate blocked by a ball at a North Carolina animal preserve allowed a lion to reach three people cleaning an enclosure and begin a fatal attack, biting Black's ankle and pulling her into the enclosure, according to a medical examiner’s report. (Photo by Monty Sloan/Wolf Park via AP Photo)
