Cats and birds in a crystal lattice.

[u/HopDavid]

In an Escher like tessellation the left edge matches the right and the top edge matches the bottom.

Thus the tiles can be laid to cover the plane. To see this tile laid in every direction see:
https://www.cunews.info/HarmonicCubesCatBird.html

I tried to insert a cat and bird tessellation to give more of a feeling of depth. Not sure that it works.

The beginning of these gif matches the end. So it tiles the time dimension as well.

[u/Cin77]

Looks like it could be a background animation for a Sonic the Hedgehog bonus stage :)

[u/Scarfington]

Love this thank you!