Least Invocation; 2nd
You gain a rapport with the beasts of the world. You gain the wild empathy ability as a druid of your warlock level and can communicate with animals as if under the effect of speak with animals. This invocation lasts for 24 hours.
Source: Complete Mage
Speak With Animals
Level: Brd 3, Drd 1, Rgr 1
Components: V, S
Casting Time: 1 standard action
Duration: 1 min./level
You can comprehend and communicate with animals. You are able to ask questions of and receive answers from animals, although the spell doesn’t make them any more friendly or cooperative than normal.
Furthermore, wary and cunning animals are likely to be terse and evasive, while the more stupid ones make inane comments. If an animal is friendly toward you, it may do some favor or service for you (as determined by the DM).
Source: Player's Handbook
Wild Empathy (Ex)
A druid can use body language, vocalizations, and demeanor to improve the attitude of an animal (such as a bear or a monitor lizard). This ability functions just like a Diplomacy check made to improve the attitude of a person. The druid rolls 1d20 and adds her druid level and her Charisma modifier to determine the wild empathy check result. The typical domestic animal has a starting attitude of indifferent, while wild animals are usually unfriendly.
To use wild empathy, the druid and the animal must be able to study each other, which means that they must be within 30 feet of one another under normal conditions. Generally, influencing an animal in this way takes 1 minute but, as with influencing people, it might take more or less time.
A druid can also use this ability to influence a magical beast with an Intelligence score of 1 or 2 (such as a basilisk or a girallon), but she takes a –4 penalty on the check.