[MC-71977] Changing generic.attack_damage of tamed wolf has no effect / taming wolf removes custom generic.attack

The bug

Changing the generic.attack_damage attribute of a tamed wolf does not appear to have any effect. Similarly taming a wolf with a custom generic.attack_damage attribute value changes it to the default.

This does not affect the Strength potion effect in the latest game versions when applied with potions or /effect; summoning a mob with ActiveEffects is MC-32575.
See MC-193202 for the health of a wolf resetting.

Reproduction steps (modifying attribute)

Summon a wolf
Tame it

Change its attributes

/data merge entity @e[type=wolf,limit=1] {Attributes:[{Name:generic.attack_damage,Base:20.0f}]}

Let it attack an entity (by punching that entity) or inspect its NBT data
```
/data get entity @e[type=wolf,limit=1,sort=nearest] Attributes
```
❌ It has the default generic.attack_damage

Reproduction steps (taming wolf with custom attribute)

Summon a wolf with a custom attribute

/summon minecraft:wolf ~ ~ ~ {Attributes:[{Name:generic.attack_damage,Base:20.0f}]}

Inspect its NBT to make sure it has the custom attribute
```
/data get entity @e[type=wolf,limit=1,sort=nearest] Attributes
```
✔ It shows the custom attribute
Tame the wolf
Let it attack an entity (by punching that entity) or inspect its NBT data
```
/data get entity @e[type=wolf,limit=1,sort=nearest] Attributes
```
❌ It has the default generic.attack_damage

Code analysis

Code analysis by @unknown can be found in this comment.

Linked issues

is duplicated by 4

MC-70160 Tamed wolves aren't affected by strength and health commands. Resolved

MC-186061 Attributes are reset to the default ones Resolved

MC-220562 Cannot give wolf strength or generic.attack_damage Resolved

MC-227528 Tamed wolves' attributes cannot be modified by /data command Resolved

relates to 2

MC-33285 Summoning slimes with custom maxHealth attributes does not work Resolved

MC-193202 Tamed wolf health resets when NBT is loaded (e.g. relog) Resolved

Comments 36

Ivan 2014-09-18T12:40:49Z

Can confirm

Orbic 2014-09-19T21:37:14Z

Can a moderator resolve this? I would like this to be fixed soon.

Orbic 2014-09-22T21:33:47Z

Why isn't this resolved yet?

Orbic 2014-09-26T23:48:25Z

This has been ignored for a while.

Dlawso the Really Lucky Rabbit 2014-09-26T23:49:40Z

Its not resolved because:

1. It "hasn't been fixed".

26 more comments

Orbic 2014-09-27T01:23:44Z

Oops! My bad. I was thinking resolved meant that the bug was recognized. Sorry! So how can I tell with this bug is known by Mojang and will be fixed? By people saying Can Confirm like Ivan did? I apologize again for the confusion! 🙂

Dlawso the Really Lucky Rabbit 2014-09-27T01:42:23Z

If the bug is known by Mojang, then the assignee will be changed to someone from Mojang. Just because some people can confirm that this bug is reproduced doesn't mean that Mojang has reproduced it. I myself hate it when other people lack patience... 😛

Orbic 2014-09-27T16:10:45Z

Yea sorry about that. I can wait!

Sonicwave 2014-09-28T03:59:41Z

Might be related to MC-47091 and MC-33285.
Btw the max duration for potion effects is 1000000, not 200000000.

Orbic 2014-09-28T20:53:33Z

Oh thanks.

marcono1234 2015-04-24T14:55:16Z

Confirmed for

1.8.4

I can maybe (without proof) explain this for the killer rabbit and (magma) slimes:

The game sets the health and attack power of slimes based on their Size. For the killer rabbit it depends on the RabbitType

I could imagine that the game has some kind of order in which it creates the tags (maybe the one which aren't set at the end). When it now creates the rabbit, it first sets its generic.attackDamage to 30. Then it reads the RabbitType tag and sets based on this the generic.attackDamage to the default value.

marcono1234 2015-09-12T14:27:54Z

Confirmed for

15w37a

Dlawso the Really Lucky Rabbit 2015-11-23T18:03:32Z

The killer rabbit part should be removed as killer rabbits are no longer supported according to MC-93038

Orbic 2015-12-05T03:40:24Z

Still occurs as of 15w49b.

Orbic 2016-03-01T00:12:20Z

This is still an issue in 1.9

user-f2760 2016-03-28T23:52:47Z

I'd like to point out that the attributes are just ignored by the commands/always set to default for the wolf
/summon doesn't set them for the wolf, and /entitydata doesn't change them

Orbic 2016-04-27T14:47:05Z

Yeah, It has something to do with tamed wolves getting the additional health wild wolves don't.

Orbic 2016-04-27T22:28:14Z

This still an issue in 1.9.3-pre2

user-f2760 2016-10-23T22:08:29Z

Could somebody make a list of the affected mobs? That'd help a lot.
Thanks in advance.

bob 2016-11-06T11:11:16Z

Is this still an issue in the latest snapshot 16w44a? If so please update the affected versions.

This is an automated comment on any open or reopened issue with out-of-date affected versions.

wobst.michael 2018-02-19T18:27:23Z

Is this still an issue in the most recent versions (currently that is 1.12.2, or the latest 1.13 development snapshot 18w07c) of Minecraft?

Orbic 2018-02-21T03:17:49Z

Still in 18w07c.

Used this command to summon a wolf, health and attack damage were not changed.

/summon wolf ~ ~1 ~ {CollarColor:1,Owner:*"Insert_Username"*,Sitting:0,Attributes:[{Name:generic.maxHealth,Base:100},{Name:generic.attackDamage,Base:100}]}

Maxaxik 2018-06-24T19:59:21Z

Affects 1.13 pre-3

Kraif 2018-09-02T18:06:07Z

Confirmed for 1.13.1. Updated command:

/summon minecraft:wolf ~ ~1 ~ {CollarColor:0,ActiveEffects:[
{Id:5,Amplifier:5,Duration:200000000}
,
{Id:21,Amplifier:5,Duration:200000000}
,
{Id:22,Amplifier:5,Duration:20000000}
]}

Orbic 2019-08-29T01:58:59Z

This report is very old, I will update it soon with clearer formatting and commands

Adrian Östergård 2020-11-03T08:10:45Z

Please make this bug report more specific, and potentially split out any issues.

tryashtar 2020-11-03T18:15:19Z

For wolves resetting attack/health on relog, see MC-193202

Aidan T Wilson 2021-05-08T02:07:51Z

Is this still an open issue? It seems to be present in 21w18a, at least according to this ticket, but the last time anyone mentioned it or reported it was November of 2020 (7 months ago).

marcono1234 2021-05-08T02:15:02Z

Yes, I tested it in 21w18a and was able to reproduce it with the generic.attack_damage attribute. I have therefore updated the report and reopened it. However, I cannot reproduce this for the Strength potion effect anymore in 21w18a, neither when a wild wolf becomes angry, nor when taming a wolf. In both cases the wolf keeps the increased attack damage from the Strength effect.

Michael Keith 2021-12-04T04:30:43Z

I recently discovered this bug. Testing on 1.18, the bug still exists (changing the generic.attack_damage attribute) and can be reproduced using the steps above.

Avoma 2022-01-09T14:21:41Z

Here's a partial code analysis of why wolves' "minecraft:generic.attack_damage" attribute is lost upon being tamed. The following is based on a decompiled version of Minecraft 1.18.1 using MCP-Reborn.

Code Analysis:

net.minecraft.world.entity.animal.Wolf.java

public class Wolf extends TamableAnimal implements NeutralMob {
   ...
   public void setTame(boolean p_30443_) {
      super.setTame(p_30443_);
      if (p_30443_) {
         this.getAttribute(Attributes.MAX_HEALTH).setBaseValue(20.0D);
         this.setHealth(20.0F);
      } else {
         this.getAttribute(Attributes.MAX_HEALTH).setBaseValue(8.0D);
      }

      this.getAttribute(Attributes.ATTACK_DAMAGE).setBaseValue(4.0D);
   }
   ...

If we look at the above class, we can see that when a wolf is tamed, no checks are carried out to maintain its "minecraft:generic.attack_damage" attribute. It will simply be set to 4.0D regardless of any circumstances, and its previous value is completely ignored.

Avoma 2022-10-26T11:56:03Z

Can confirm in 1.19.2.

ISRosillo14 2023-01-30T21:36:31Z

This issue happens because wolves change their attribute base values when being tamed rather than using Attribute Modifiers (like shulkers when closing; baby zombies;...). Changing wolves to use them would fix this issue.

Lombax_Pieboy 2023-09-15T17:39:25Z

Coming from issue MC-73411, this is very much still an issue in 1.20.1, and no amount of finagling seems to be able to bypass it. Even once the mob exists, you still cannot modify the base attack damage of the rabbit with a /data modify or merge, and weakness potions etc. have no effect.

Data merge for reference:
/data merge entity @e[type=rabbit] {ActiveEffects:[

{Id:18,Amplifier:100b,Duration:2000,ShowParticles:1b}

]}

/data modify entity @e[type=rabbit,limit=1] Attributes[
{Name:"generic.attack_damage"}].Base set value 1

Both of these commands "work", and particle effects will be applied, but the attack damage stays the same.

ISRosillo14 2023-12-18T20:43:43Z

Can confirm in 23w51b.

Lombax_Pieboy 2024-07-22T15:50:21Z

This issue is still occurring for certain passive mobs like the killer bunny. Status effects such as negative strength, or changes to generic attack damage have no effect on how much damage the mob does. This is easily reproduceable in 1.21. Here's a command:

/summon rabbit ~ ~ ~ {Health:15f,RabbitType:99,Tags:["boss1"],active_effects:[{id:"minecraft:strength",amplifier:-2,duration:10000}],attributes:[{id:"minecraft:generic.attack_damage",base:1},{id:"minecraft:generic.max_health",base:15}]}

Regardless of what values you choose, generic attack damage cannot be set or modified.

Changing generic.attack_damage of tamed wolf has no effect / taming wolf removes custom generic.attack_damage