bedrock-samples/behavior_pack/entities/cow.json

{
  "format_version": "1.21.0",
  "minecraft:entity": {
    "description": {
      "identifier": "minecraft:cow",
      "spawn_category": "creature",
      "is_spawnable": true,
      "is_summonable": true
    },

    "component_groups": {
      "minecraft:cow_baby": {
        "minecraft:is_baby": {
        },
        "minecraft:scale": {
          "value":0.5
        },
        "minecraft:ageable": {
          "duration": 1200,
          "feed_items": "wheat",
          "grow_up": {
            "event": "minecraft:ageable_grow_up",
            "target": "self"
          }
        },
        "minecraft:behavior.follow_parent": {
          "priority": 6,
          "speed_multiplier": 1.1
        }
      },
      "minecraft:cow_adult": {
        "minecraft:experience_reward": {
          "on_bred": "Math.Random(1,7)",
          "on_death": "query.last_hit_by_player ? Math.Random(1,3) : 0"
        },
        "minecraft:loot": {
          "table": "loot_tables/entities/cow.json"
        },
        "minecraft:behavior.breed": {
          "priority": 3,
          "speed_multiplier": 1.0
        },
        "minecraft:breedable": {
          "require_tame": false,
          "breed_items": "wheat",
          "breeds_with": {
            "mate_type": "minecraft:cow",
            "baby_type": "minecraft:cow",
            "breed_event": {
              "event": "minecraft:entity_born",
              "target": "baby"
            }
          }
        },
        "minecraft:interact": {
          "interactions": [
            {
              "on_interact": {
                "filters": {
                  "all_of": [
                    { "test": "is_family", "subject" : "other", "value" :  "player"},
                    { "test": "has_equipment", "domain": "hand", "subject": "other", "value": "bucket:0"}
                  ]
                }
              },
              "use_item": true,
              "transform_to_item": "bucket:1",
              "play_sounds": "milk",
              "interact_text": "action.interact.milk"
            }
          ]
        }
      }
    },

    "components": {
      "minecraft:is_hidden_when_invisible": {
      },
      "minecraft:type_family": {
        "family": [ "cow", "mob" ]
      },
      "minecraft:breathable": {
        "total_supply": 15,
        "suffocate_time": 0
      },
      "minecraft:navigation.walk": {
        "can_path_over_water": true,
        "avoid_water": true,
        "avoid_damage_blocks": true
      },
      "minecraft:movement.basic": {
      },
      "minecraft:jump.static": {
      },
      "minecraft:can_climb": {
      },
      "minecraft:collision_box": {
        "width": 0.9,
        "height": 1.3
      },
      "minecraft:nameable": {
      },
      "minecraft:health": {
        "value": 10,
        "max": 10
      },
      "minecraft:hurt_on_condition": {
        "damage_conditions": [
          {
            "filters": {
              "test": "in_lava",
              "subject": "self",
              "operator": "==",
              "value": true
            },
            "cause": "lava",
            "damage_per_tick": 4
          }
        ]
      },
      "minecraft:movement": {
        "value": 0.25
      },
      "minecraft:despawn": {
        "despawn_from_distance": {}
      },
      "minecraft:behavior.float": {
        "priority": 0
      },
      "minecraft:behavior.panic": {
        "priority": 1,
        "speed_multiplier": 1.25
      },
      "minecraft:behavior.mount_pathing": {
        "priority": 2,
        "speed_multiplier": 1.5,
        "target_dist": 0.0,
        "track_target": true
      },
      "minecraft:behavior.breed": {
        "priority": 3,
        "speed_multiplier": 1.0
      },
      "minecraft:behavior.tempt": {
        "priority": 4,
        "speed_multiplier": 1.25,
        "items": [
          "wheat"
        ]
      },
      "minecraft:behavior.follow_parent": {
        "priority": 5,
        "speed_multiplier": 1.1
      },
      "minecraft:behavior.random_stroll": {
        "priority": 6,
        "speed_multiplier": 0.8
      },
      "minecraft:behavior.look_at_player": {
        "priority": 7,
        "look_distance": 6.0,
        "probability": 0.02
      },
      "minecraft:behavior.random_look_around": {
        "priority": 9
      },
      "minecraft:leashable": {
        "soft_distance": 4.0,
        "hard_distance": 6.0,
        "max_distance": 10.0
      },
      "minecraft:balloonable": {
      },
      "minecraft:rideable": {
        "seat_count": 1,
        "family_types": [
          "zombie"
        ],
        "seats": {
          "position": [ 0.0, 1.105, 0.0 ]
        }
      },
      "minecraft:physics": {
      },
      "minecraft:pushable": {
        "is_pushable": true,
        "is_pushable_by_piston": true
      },
      "minecraft:conditional_bandwidth_optimization": {
      }
    },

    "events": {
      "minecraft:entity_spawned": {
        "randomize": [
          {
            "weight": 95,
            "trigger": "minecraft:spawn_adult"
          },
          {
            "weight": 5,
            "add": {
              "component_groups": [
                "minecraft:cow_baby"
              ]
            }
          }
        ]
      },

      "minecraft:entity_born": {
        "add": {
          "component_groups": [
            "minecraft:cow_baby"
          ]
        }
      },

      "minecraft:entity_transformed": {
        "remove": {
        },
        "add": {
          "component_groups": [
            "minecraft:cow_adult"
          ]
        }
      },

      "minecraft:ageable_grow_up": {
        "remove": {
          "component_groups": [
            "minecraft:cow_baby"
          ]
        },
        "add": {
          "component_groups": [
            "minecraft:cow_adult"
          ]
        }
      },

      "minecraft:spawn_adult": {
        "add": {
          "component_groups": [
            "minecraft:cow_adult"
          ]
        }
      }
    }
  }
}