https://eizouasobi.blogspot.com/2024/04/efficient-use-of-blender-assets.html

If there are objects that are not displayed when opened with Blender 2.8 or later, follow the procedure below to display them.

1. Restriction toggles.
2. Check Enable in Viewports.

The number of vertices is around 2000 to 30000.

Sculpting is not done.

There are 10 to 100 animations for each model.

For terrestrial animals, there is an animation set that allows walking by root motion with a game engine.

Other animation patterns are also for games such as attacks and damage.

You can see what kind of animation is set by referring to the document page of individual releases already.

https://blendermarket.com/creators/junnichi-suko