whats some advanced, non 3d/roto/tracing ways to animate like milt kahl or disney in 24fps like back in the old days especially like knowing the exact spacing and timing of the different pacing of quadrupedal animals, or the exact position and orientation of pelvis, ribcage spine and so on against/following the motion of the moving, dominant, legs and arms as exact, correct and naturally as possible? espcially not only that it is physically and biologically correct, it is also built/geared towards elaborate fantastical movement, also including three dimensional spatial awareness and some biological posture, and conditional variety...while still maintaining absolute realism in various unrealistic situations

ofc maybe it's just talent but i just gotta ask this one time