This potion enables the imbiber to empathize with and control the emotions of animals of one type, i.e. cats, dogs, horses, etc. 

The number of animals so controlled depends upon size: 5-20 animals of the size of giant rats, 3-12 animals of about man-size, or 1-4 animals of about ½ ton or more in weight. 

The sort of animal which can be controlled depends upon the particular potion as indicated by die roll (d20):

Animals with Intelligence of 5 (low intelligence) or better are entitled to a saving throw versus magic. 

Control is limited to emotions or drives unless some form of communication is possible. 

Note that many monsters cannot be controlled by the use of this potion, nor can humans, demi-humans, or humanoids. (cf. Ring of Mammal Control.)