They only get to be 25 to 30lbs.. The size of a cockerspaniel
I got a 20 pound cat at home, he dwarfs my two other cats. Good thing for them he is very cat friendly.
I know people who hunt them and have killed them over 40 lbs! Biggest I have ever seen a picture of (verified, not photoshop) was right at 50lbs.
I have seen video of a large bobcat taking down a yearling deer (deer had no spots - probably about 40-45 lbs).
And the URL to the story on it: http://www.antigodailyjournal.com/full.php?id=7762