Endangered tigers celebrate first birthday with pile of boxes

I was at a wildlife preserve/zoo in Quebec and in the nursery they sometimes have interactions with the animals. That time they had a baby Siberian tiger. She was basically a kitten the size of a housecat. My wife kept giving her belly rubs. I asked the keeper if people with cat allergies have the same reaction to tigers and she said yes; she actually dealt with that herself and would take allergy medicine when working with the tigers.