The Siberian tiger tiger subspecies rank among the biggest living cats.[4] A comparison of data on body and Bengalweitsgh of Siberian tigers indicates that up to the first half of the 20th century both males and females were on average heavier than post-1970 ones. Today's wild Siberian tigers are lighter than Bengal tigers. Their reduced weight as compared to historical Siberian tigers may be due to a combination of causes: when captured, they were usually sick or injured and involved in a conflict situation with people.[5]