Project Animals - Buffalo

Looks so natural and… amazing! good stuff

sorry if the question is dumb haha but are you able to apply animations to a rigged model ?
say if i had a 3d model of a quadroped with similar body shape and movement, would i be able to apply these animations to it ? or even if i had a model nothing like it would i be able to apply these animations to it ? really hoping so haha because i know achieving animations of this quality takes a long time to learn.

and am i able to do that in maya/unreal engine or would i need software like motion builder for example?
thanks in advance <3