An animal with an Intelligence of 2 can learn six tricks.
You can teach the befriended animal three specifi tricks or tasks for each point of Intelligence it posesses. ... They cannot be complex (complex tricks, such as accepting a rider, require the Handle Animal skill).
An animal with an Ingelligence of 2 can learn six tricks.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.