You can speak with and befriend animals with ease. In addition, you treat Knowledge (nature) as a class skill.
Animal Companion (Ex): At 4th level, you gain the service of an animal companion. Your effective druid level for this animal companion is equal to your cleric level – 3. (Druids who take this ability through their nature bond class feature use their druid level – 3 to determine the abilities of their animal companions).
Domain Spells: 1st—calm animals, 2nd—hold animal, 3rd—dominate animal, 4th—summon nature’s ally IV (animals only), 5th—beast shape III (animals only), 6th—antilife shell, 7th—animal shapes, 8th—summon nature’s ally VIII (animals only), 9th—shapechange.
Pathfinder RPG Core Rulebook. Copyright 2009, Paizo Publishing, LLC; Author: Jason Bulmahn, based on material by Jonathan Tweet, Monte Cook, and Skip Williams.