Guild Wars 2

Pet : Bat
Skill: Echo-location
Description: Bat climbs several hundred units in the air, and uses its echo location to reveal the enemy’s position on mini map within a several hundred unit radius of the ranger. Stealth-ed enemy positions are only revealed on the mini map. Based on scale of map you’d either see dots or enemy profession symbols (similar to pvp)

Pros:
Gain information on enemy locations.
Pet remains out of combat until the ranger swaps pets.

Cons:
This bat skill doesn’t offer any offensive/defensive bonuses, draw aggro, or absorb damage for ranger.

it should be like this

Echo-Location
– Bat lets out a screech revealing all stealthed enemies in the area (1200 range, 40 second cooldown, 4 second reveal, 2 second cast time)