Whhhhoooooaaaaaa, nice dawg!!!

Those are speedy indeed. Very small dog ( pup) heheh. I was thinking with some ingenuity  You might be able to gear the output of the 60 kg/cm servos to move faster like a 5:1 . You could use a belt drive, chain or 3d printed gears.  The lower leg could be strategically placed rod ( close to pivot point) to gain some speed.

For all you guys out there, looking for a new pet...

https://www.desmos.com/calculator/rpnk0wnpvj?lang=de

NEAT! Good find!

Are the servos you are referring to  @Will the ones used on MIT robot dog.  I see some on ALI for $500 to $900 each. You can buy all the parts or a complete Dog for ~6000 to 8000 USD if you search DOGOTIX MIC-01A (looks like there is an MIC-01B as well) but there seems to be a couple of companies selling them under various names / models.  They are not smart (remote control) so would need some sensors and a brain.  hmmm

I can actually get the MIT Mini motors for about $299 USD and then a Flipsky driver board for another $100...so about $400 per DOF x 12 +$4800. But those kits are intriguing....might be able to extract what I need for a build. Nice find.

Wow, the DOGOTIX MIC-01B is only $3250 [u]USD....hmmmmmm [/u] Edit..some places it says $3250 and others says $6000 to $7000 lol never a good sign! Maybe assembled vs unassembled...?????

Nink, Watching that Cheetah vid was interesting. Ont thing I have never seen in a walker happens at 2:26 when the knee joints invert and the robot swaps orientation from front to back. Seems so easy to get out of a situation rather than walking backwards until you are clear. That was cool.