Animation priorities allow a viewer to decide which animation to play over another.
1 – Linden base animations. (No point competing with these.)
2 – Animation Overrides.
3 – Furniture animations, dance animations; sits and long-play looping animations and poses until standing up.
4 – Animations that are supposed to override all other animations playing, such as gestures, drinking, eating, and temporary animations that don’t loop. In addition, “permanent until detached” animations that are supposed to override all other playing animations even when walking, dancing, or sitting down, such as hand-bag holding animations, answer the phone animations etc.