itch.io

Depends on how fast you want the animations to run. I set my animations to six frames per second and that did the trick for me. golly-games.itch.io/the-kings-cellar

Depends on what program you are using, for example I'm using Aseprite, which automatically sets the correct frames per seconds value and using an extension for Unity I import it into the engine. From what I've tried, 25 fps for the animations are perfect.