Animated version
The animated version of a website design is the one that includes the moving touches, next to the standard version without them.
In a simple example
You pick the same bakery design, and choose the animated version when you want it to move.
Why it matters to you
It lets you choose between a calm page and a lively one for the same design.
Do not confuse with
Animated describes the version of the files. It does not change what the site says.