I couldn't help but notice that the best pet on Subeta has an intelligence of 836 but has only read 110 books. My pet Capulet's intelligence is only 347 but he's read 335 books. Is there another way to get your pet's intelligence up, or is there just some kind of an error on the other pet's page? Maybe it doesn't show into the thousands or something.

They mainly come from stat boosters, especially Shinwa Quests. There is a link to a list of them in the sticky thread. http://www.subeta.net/forums/view/365840

Thanks, guys. I appreciate the help. :)