Better animations for old mobs

I liked the animations for the newer mobs that were added such as the Frog's animation, the Cammel's animation, the Sniffer's animations and the Warden's animations but older mobs stayed behind on the animation aspect. I still like the vanilla animations, since they are simplistic but they can sometimes look a little bland and not very lively and i would like the older mobs to have the same traits as the newer ones. I liked that in Minecraft Dungeons for example, mobs still had their regular animation, but they also had idle animations like zombies sleeping while they were standing or skeletons spinning their heads around. Little details like that I would really appreciate. I'm not asking for something DRASTIC like the Fresh Animations texture pack (I'm not saying it's bad it's awsome don't missinterpret). Just suddle changes that would make the game a lot more immersive. I'd also like mobs like chicken, pigs, cows, and other mobs to have these changes. I dont say i want these changes for 1.21 but i would really appreciate to see them in a future uptate/mini-update like the Armored Paws update. Thank very much to you for reading this good bye.