Is there a way to do this other than reading them one single book at a time? I have several pets who need higher intelligence for promotions at their job. Thanks :)

some stat boosters boost intelligence, and certain books increase intelligence by more than one point at a time. (list on subetalodge)

also, the game mystic spindles awards intelligence experience points that can be exchanged for intelligence. this is most useful at very low intelligence, as the cost increases sharply as your pet's intelligence increases.

ty!!!