Minecraft wiki entry for Fox, associated text: Entity data
Additional fields for mobs that can breed[show]
Tags common to all entities[show]
Tags common to all mobs[show]
 Crouching: 1 or 0 (true/false) – Whether the fox is crouching.
 Sitting: 1 or 0 (true/false) – Whether the fox is sitting.
 Sleeping: 1 or 0 (true/false) – Whether the fox is sleeping.
 Trusted: A list of players that the fox trusts. For a list with more than 2 elements, only the first and the last are considered.
: The UUID of each trusted player, stored as four ints.
 Type: ID of the fox's type.