Re: What is the largest feline?

The largest felines recorded are Siberian Tigers.  There is some overlap 
with lions: some lions may be bigger than some tigers.  Overall, though, 
Siberian tigers are larger, and the largest Siberian tigers are bigger than 
the largest lions.  Other tiger subspecies, like the Sumatran and Indian 
tigers, are smaller than lions, on average.

Walker's Mammals of the World lists the size and weight ranges as follows:

Lions:
 body and tail: 2600 - 3550 mm (8.6 - 11.7 feet)

 weight: males 150 - 250 kg (330 - 550 lbs) (females are smaller)

Siberian tigers:
 body and tail: 2000 - 3750 mm (6.6 - 12.4 feet)

 weight: males 180 - 306 kg (400 - 675 lbs) (females are smaller)

National Geographic's web site has some information on tigers, and Siberian 
tigers specifically, including a neat page that allows you to design a zoo 
habitat for a tiger.  You can find it at http://www.natio
nalgeographic.com/tigers/maina.html.  They say that Siberian tigers can 
weigh up to 800 lbs!