By means of this spell, the caster calls up to six animals of 8 Hit Dice or less, or 12 animals of 4 Hit Dice or less—of whatever sort the caster names. Only animals within range of the caster at the time the spell is cast will come. The caster can try three times to summon three different types of animals. For example, suppose that wild dogs are first summoned to no avail, then hawks are unsuccessfully called, and finally the caster calls for wild horses. The DM determines the chance of a summoned animal type being within range of the spell. The animals summoned aid the caster by whatever means they possess, staying until a fight is over, a specific mission is finished, the caster is safe, he sends them away, etc. Only normal or giant animals can be summoned; fantastic animals or monsters cannot be effected by this spell (no chimerae, dragons, gorgons, manticores, etc.).
Notes: Common for clerics and druids (PHB).