I think all the search engines do Mozilla too though. From my server logs:
cgore.com:80 218.94.63.53 - - [02/Jul/2013:16:40:57 -0500] "GET / HTTP/1.1" 200 3708 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"
cgore.com:80 218.94.63.53 - - [02/Jul/2013:16:40:57 -0500] "GET / HTTP/1.1" 200 3708 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"