QUOTE(Leviathan113 @ Feb 1 2007, 11:48 PM) [snapback]1525956[/snapback]
The reason for a mountain lions and a snow leopards h has little to do with their size, these cats use their long tails for balance while navigating among the hieghts of their environment. A caracal has a longer tail than a lynx, but is still much shorter than most feline tails in comparison to its body. i will look into it, but I am pretty sure that lynx have been succesfully bred with caracal's, though resulting in sterile hybrids.
A larger body is much more difficult to balance however and only the Eurasian lynx is much larger than a domestic cat. The carcal tail is relatively short compared to most member other cats, but it is much longer than the lynx's tail and benig in a flat landscape it may not need it much. Inbreding to form a sterile offspring would not suprise me, it is happens with many closely related species (lions and tigers, various types of dolphin, horses and donkeys).
It could also be that the lynx has a lower centre of gravity? (this is just a guess but there seems to be little work done upon this)