I doesn’t make a difference but she was a breeder. I wonder if her hormones were being altered. Do they use meds with breeding?
To be honest I never worked with any thing other then dogs, cats & smaller farm animals. I would think,( but I don’t know) had the tiger been in heat she wouldn’t have been on display. I don’t know about the meds. I think the tiger just had enough & did what a wild animal will do when its bothered...attack. If I was a tiger thats just what I would have done if a bunch of idiots were bugging me & I had enough.