In India at Ranthambore Tiger Preserve we experienced what our guide described as a "rare" sighting in. An adult Bengal Tiger can be up to 3 metres long, tail included, and weigh more Due to the extreme threats faced by Bengal Tigers in the wild, conservation. The Bengal tiger (Panthera tigris tigris) is the most numerous of the tiger subspecies. By . However, the heaviest known wild tiger was a huge male killed in that weighed kg ( lb) and measured cm ( in) in total Characteristics · Distribution and habitat · Ecology and behavior · Threats.