Actually, I'd like to see if these creatures existed too, mainly so I could figure out their walk cycle. Would they be twice as sneaky as cats, or a bit more clumsy?

yes ! i Wonder about this a lot too ! I know about each movement in the walk cycles of horses, and sometimes i catch myself wondering if spiders follow one too or if they just throws their legs and hope for the best

maybe these would be better climbers in some situations… i Don't think another pair of legs is useful for running, though

After seeing your artwork here, I did a little "Research" on YouTube looking at insect and Ant animation. It seems the middle legs swing only forward and back, adding a sort of "Mid step" to the ant's front and hind feet. Now... Six llimbed Cats being far more flexible and heavier than ants would need to adopt a walk where the middle feet move in sequence with the front and back feet...

Ever watch Miyazaki's "Cat Bus" from his feature "My Neighbor Totoro"?

That's why I prefer to draw my six limbed mammals "Centaur" style. I can't stand the idea of these wonderful creatures tripping over their own paws.

oh, i actually reaaally need to catch up on miyazaki's films, i haven't seen a single one, that's crazy !

I Don't know, the idea of a creature that's a little clumsy and goofy is kind of charming to me :p but i gotta admit the centaur style is really neat too ♫