THE LIFE OF A TIGER
Adult tigers usually live alone, but they are not unfriendly. Two tigers may meet on their nightly round, rub heads together in greeting. Several tigers may share a kill. A tigress can bear her first cubs when she is 3.5 to 4 years old. The cubs weigh about 3 pounds [1.4 kg] at birth. The cubs are playful but their life is hazardous, and about half die before they are a year old the cubs become independent when about 2 years old.