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Pack Alertness
Ranger Utility 2

Through subtle communications, you and your beast companion act almost as if you share senses.

Close burst 10

Target: You and your beast companion in burst

Effect: The targets each make a Perception check and share the better result. Also, if your beast companion becomes aware of a target, you do as well, and vice versa.
Beast: If your companion is a cat, a raptor, or a wolf, the targets gain a +2 bonus to the Perception checks.

Pack Alertness is an at-will power available to rangers at the 2nd level.[MP:45]