Mob animation

Newer mobs like foxes the warden pandas have some amazing animations the pandas can roll and eat the foxes can jump and sleep while other old mobs fall behind. The cow for example is a rectangle with stiff one joint legs the squid has the same thing maybe adding more joints to the older animals and some newer animations like sleeping could help. It Just feels like there is a big animation difference between mobs that have not been recently added or updated and it makes the game feel odd at times.