所有已实现的接口:
SyncedDataHolder, Attackable, EquipmentUser, Leashable, Targeting, VariantHolder<Fox.Variant>, EntityAccess, Nameable, ScoreHolder, ICapabilityProvider, ICapabilityProviderImpl<Entity>, ICapabilitySerializable<CompoundTag>, IForgeEntity, IForgeLivingEntity, INBTSerializable<CompoundTag>

public class Fox extends Animal implements VariantHolder<Fox.Variant>