CRB pg 221.
"The critter may control a number of small animals (cats, rats, etc.) equal to its Charisma x 5, a number of larger animals (wolves, lions, bears, etc.) equal to its Charisma, or a single appropriate paranormal critter".
I'm unclear whether to read this as how many targets the power can affect, or how many animals may be kept under control at one time, similar to how many spirits a summoner may control at once. It's a sustained power, and the critter can have several sustained powers going at once.