Cyberdog (Fallout: New Vegas)

Cyberdogs are creatures in Big MT.

Cyberdog
Only Rex appears in-game as a regular cyberdog.

Military cyberdog
The military cyberdog has a sonic bark used as a weapon and has a chance to knock down the player with a melee attack.

Police cyberdog
A slightly weaker variety of the military cyberdog, police cyberdogs may contain several types of small energy cells on death. They can be distinguished from military cyberdogs by their unique black and white paint, as well as the red and blue reflective patches on their back.