Hello! Thank you for the feedback!
You're not missing anything! Animated Sideview Sprite Pack is very niche. It is totally sideview, specifically designed for slow, Tamagotchi-style animation, hence it only has 2-frame animation (please see product description for more information)
During its development, I realized such sideview style won't work on top-down RPG setting when larger animals such as elephants are introduced, hence this assets pack exists as a standalone for Biome Tileset Packs.