Boston Dynamic’s been keeping dog lovers happy throughout their steady development of BigDog, a robot with uncannily canine gait and maneuvers. Now, feline aficionados can finally rejoice as WildCat makes its way into the robot world.

However this is not the the first time that Boston Dynamics has taken a crack at cat-like bots — WildCat’s predecessor is the Cheetah bot which boasted a running speed of 45 km/hour. While this machine’s no slow poke, it can currently only run at about 26 km/hour but its truly biomimetic design should have it up to speed with real-world wild cats in the near future.

As part of US’ Defence Advanced Research Projects Agency’s (DARPA) Maximum Mobility and Manipulation (M3) program, robots like WildCat are being developed to increase the efficacy of military operations across a great range of missions.

And even though cats and dogs don’t normally get along in the real-world, humans may choose to have their robot counterparts working together. Machines like BigDog could be charged with the task of carrying heavy loads over long periods time, while ones like the WildCat might be used when there’s a need to maneuver with speed and agility.

But let’s not forget androids! If you were fascinated by Boston Dynamic’s PETMAN, it’s high time you check out its upgraded version Atlas. It may look a little scary in the video below but researchers are confident that bots like these might be able to help humans out in life-threatening situations.

The  HRP-4C Humanoid  robot was developed by The National Institute of Advanced Industrial Science and Technology (AIST) of Japan and Kawada Industries. As you can see above, this robot can put on quite the show! Created mainly for entertainment purposes, this robot has even hit fashion runways! Actroid- DER3, developed by Osaka University and the robotics company Kokoro, is also being used for similar purposes.

Another pretty face below- the mask bot which uses a simple projection of a real human face to achieve its life-like appearance, was developed by AIST and  the Institute of Cognitive Systems (ICS) at the Technische University in Munich .

Some humanoids can even play music! Check out a robot released by Toyota back in  2007 that can play the violin.

A joint project between the MIT Media Lab and Drexel University put on this performance using 4 HUBO robots which were developed by the Korea Advanced Institute of Science and Technology (KAIST)

Many robots are developed for use as research platforms. Nao, developed by Aldebaran is currently being used in all sorts of research at elementary schools, hospitals and universities around the world.

MIT Media Lab’s Nexi is giving researchers insight into human-robot interaction. While it couldn’t pass for a human, the robot does manage to display rather convincing facial expressions.

CB2 is another robot developed by Osaka University. Similarly to the iCub (developed by the European RobotCub consortium), it expresses child-like behaviours and learning abilities to help researchers study human cognitive development.

Of course there are plenty more humanoids out there! What’s your favourite android?