Pets servant species Mole. He is a servant of Miners. He has skill about dig and watching in darkness. He could feel the heat of the lava and earthquakes so faster. It's made Miners handy and safety when work.

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Project Pets Servant(PPS) start(even it start so long since here => http://www.furaffinity.net/view/8352553/ )

Because any animal fit with some job of human I think. :3
Every Pets servant will have D-Collar(Detect Collar) when you seen at their neck. (For don't let's Pets servant disappear.(Detect for human and pets safety))