Siberians usually donot have many predators.... but their cubs do.
A female goes to retrieve food. She leaves her cubs in the den. When she returns her cubs have disappeared. She sees a long green belly sliding over the grass: a Python has consumed her cubs.
Pythons (Pie-Thonns) are a large species of snake that live in India along with Siberian Tigers. They prey on tiger cubs that are defenceless. Pythons know NOT to mess with a full grown mature tiger who will attack. Pythons often attack cubs when the mother is not present. They slide from trees and onto the ground. A single python will probably consume the whole litter! That's usually 3 to 4 cubs!