https://www.sciencedaily.com/releases/2021/02/210217151054.htm

The video of this quadraped robot toy walking is here: https://www.youtube.com/watch?v=X5caSAb4kz0This has been used before in toymaking, but the sensors are new, I think.

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Other researchers are working on a bird-like perching robot called SNAG ( stereotyped nature-inspired aerial grasper ) based on a peregrine falcon, for quadricopter use. Every leg has its own motor. Doesn't sound energy efficient, but this is very fast in grasping.

https://www.sciencedaily.com/releases/2021/12/211201145322.htm

" Inspired by the way tendons route around the ankle in birds, a similar mechanism in the robot's leg absorbs landing impact energy and passively converts it into grasping force. The result is that the robot has an especially strong and high-speed clutch that can be triggered to close in 20 milliseconds. Once wrapped around a branch, SNAG's ankles lock and an accelerometer on the right foot reports that the robot has landed and triggers a balancing algorithm to stabilize it. "

Original paper and graphics here: https://www.science.org/doi/10.1126/scirobotics.abj7562

I'm of course thinking, "can this research be converted into prosthetic legs for raptors?" It's 3-D printing but don't know if it's as lightweight to scale as a real raptor leg.

MIT has the mini-cheetah 3 which is robust and can do backflips. I will comment that the MIT video contains disturbing images of robot abuse to prove its robustness and ability to right itself. https://www.youtube.com/watch?v=xNeZWP5Mx9s I also think Mr. Hastings would probably want to TOD (Test to Destruction) this robot.
Story gotten from Sciencedaily: https://www.sciencedaily.com/releases/2019/03/190304134200.htm

Engineers devised a robot that had to figure itself out (self-model from internal feedback) before doing tasks. https://www.sciencedaily.com/releases/2019/01/190130175621.htm
Sleep well, because the robots are coming.