Agro tags don't work with Neutral Mobs that have New AI

Going to say this is intended. The game stores the information in some weird state that is not kept in the entity's data. Besides, just saying the wolf is angry is ambiguous.

This can most likely be an oversight of entity data that will be not be recoded soon.

Reopened.

i was thinking that it may be a good idea if you could choose who the wolf attacks.
for example: /summon Wolf ~ ~ ~ {Angry:[1,Attacks:<PLAYERNAME, @a, @r or @p>]}
this way the wolf will attack one or multypull<-(just don't know how to spell this word) players.
a clearer example: /summon Wolf ~ ~ ~ {Angry:[1,Attack:@p]}

Confirmed for 14w08a.
See MC-49293 as well. I think there's something wrong with the anger tag in summoning.
Actually it seems spawners aren't spawning angry pigmen either.

Anger tag is not working in 14w10a

This is a bit awkward since this has gone unnoticed since October, but that command doesn't work because it isn't formatted correctly. Angry is a byte tag, so its value needs a "b" after it in the command. This function works:

/summon Wolf ~ ~ ~ {Angry:1b}

Just used this command in 14w10b. Spawned a wolf in angered state, growling and having the appropriate skin.

That is not what the bug report is concerning, and states in the report that the tag does apply the skin correctly. The issue is the wolf not becoming hostile, even though the skin is applied.

Yes right.
(Should've tested before resolving...)

Yes this is still a bug. But I'm sure it's related to the Anger tag with Enderman, Pigmen, etc

Still present in 14w20b. I'm sure this bug is caused by the Angry tag not the mob. I've tested this with other mobs. You cannot summon angry Endermen or angry Zombie Pigman, and Wolves only have an angry appearance. Perhaps the bug should be revised to include MC-47552 to become one report.

{Angry:1} and {Angry:1b} tag does not work when summoning

Endermen affected by this as well.

Quick correction: endermen do not have an "Angry" tag or related, and Zombie pigmen use the "Anger" tag instead of "Angry", though it does produce the same result of having no default hostility anyway. Very likely to do with the AI being updated and the "Anger" tag functioning correctly (determining how many ticks until the pigman is no longer hostile, in which this didn't work beforehand I believe).

Good to know. Guess that's why I couldn't get Endermen to spawn angry.

Ok I'm moved my support over here from the Pigman agro bug but I believe there have been previous wolf agro bug reports that were shut down previously with no interest shown. I guess that key point about the wolves looking angry and behaving angry was never fully investigated. If they fix this issue maybe an "angry" tag should be on all mobs.

Bug still present in 14w21b.
Perhaps the description should indicate the Angry and Anger tags to include the tag for Pigmen..

I am concerned that the Anger and Angry nbt tags are different as one is a true/false tag and the other involves a countdown in game ticks. Does that affect priority of these bugs because the wolf agro has been an issue for a while with no support?
Does the Pigman issue get more support if it raises the issue that the Zombie Pigmen can be exploited as you just have to log off and log back on again for them to lose their anger?

Mobs can be "angry" at different players, or even other mobs, without being angry at all of them. It's not clear to me what you're expecting these tags to do without some way to specify a target.

"It's not clear to me what you're expecting these tags to do without some way to specify a target."

Torabi, the Anger/Angry tag function is to track a random player and then attack it. It doesn't happen specifically unless you hit the mob.

Go ahead and do the command /summon PigZombie ~1 ~1 ~1 {Anger:1} in 1.7.10pre1 while in survival mode with a player. Kill it, then do it again to see the randomness of which player it attacks.

Confirmed for 14w25a. I dug a bit into youtube. It seems the Wolf issue has been there since it was introduced, but spawning an angry Pigman was at one point possible.

Confirmed for 14w26b

So... there's no fix?

Markku?

Confirmed for 14w28a

Confirmed for 14w29b

Confirmed for 14w30c

This has been fixed, but differently for wolves and zombies:

Wolves will only remain angry as long as they have something to attack. Summoning an angry wolf will immediately make it non-angry since it doesn't have a target.

Pig Zombies will actively try to find targets for as long as they're angry, even if they can't find / don't know the source of the anger.

Very happy about the pig zombie fix, but is there no way summon hostile wolves at all then?

I'm probably just stupid but I still can't summon an angry PigZombie or Wolf in 14w31a.

@Noah: the "Anger" tag is the duration of their hostility in ticks, so if you set to 1 it'll be passive near instantly. The highest value you can input is 32,767:

/summon PigZombie ~ ~1 ~ {Anger:32767}

And I can confirm it's fixed from that.

Unfortunately, the aggro'd wolves don't see a survival-mode player as a target. Which is the main reason I want to summon them.

Addition: Also sometimes crashes the game. Not sure what is different when it crashes or not.

No there's something wrong here still. If it's a timed tag, it doesn't make sense.

The angry tag seems to be complete random.
To reproduce put this command in a command block

/summon PigZombie ~ ~2 ~-6 {Anger:10}

Put a lever on the top and summon them so you are facing to the north, Spam click the lever in Adventure Mode and watch for some random reason, some are hostile and others are not. Also they don't lose their hostility, so it can't be a timed tag.

Hostile Pigmen summoned do not hold grudges after player death either.

10 ticks is half a second long. It may be that their AI isn't selecting a target in time. But it is the duration of their anger; check via an NBT editor and note that the value decreases over time, and they will be hostile so long as it is above 0.

But part of what I'm saying is 10 ticks should never work. But those that do spawn hostile remain hostile.

Qmagnet, this is random but intended due to server + client packet delay within latency. I can't really explain it well (not a server internal techie) but the entity sends out a packet that "finds a target". Usually since 10 ticks is really fast, the packet can't catch up and fail with the "responding packet" of the player when the Anger tag reaches to 0. What you are seeing here is the "responding packet of the player" responding to the "find-a-target" packet due to the less amount of latency.

Ah sorry, totally misread. I can confirm that, but it seems to be a separate issue. Theory is that when they pick a target, they will go after that target even after their "anger" has depleted (intended?). If you go out of range of those hostile pigmen, they will no longer target you once returning within range.

EDIT: I can't confirm your "pigmen don't hold grudges after death". Set a pigmen to a longer Anger duration, kill yourself (or be killed by it), and it will remain hostile towards you (until its anger depletes and you are not within range).

Intended?
PigZombies turned hostile remain hostile after death but not summoned hostile PigZombies?

Oh wait, I got that mixed up..

I tried the longer ticks thing, too, but with wolves. Doesn't seem to make a difference. They go docile pretty much immediately, even though a player in survival mode is in sight. They will go after skeletons, though.

I wish/hope there's a way to make them go after players – otherwise they're not too useful to spawn.

@Scix, Jeb said hostile wolves cannot be spawned.

Ah, foo. I could do it two days ago (sort of), but I guess that was a bug.

Well, poo. I guess my dark woods full of dangerous wolves idea is all shot to heck now.

Not really. They would summon with an angry appearance but not actually be hostile. I suggest you post your thoughts here: http://www.reddit.com/r/minecraftsuggestions/comments/2c53l5/spawn_hostile_woves/

Thanks!

Okay so Pigmen hostile tag will deplete to 0 but they will remain hostile until player dies?

Is this the cause of Zombie Pigmen attacking all the players in multiplayer in prior versions, not just the player who attacked it?

@Andrew, Zombie Pigmen have always attacked any player if they are hostile but they will typically attack the player who attacked them first.

So I still can't summon angry Pigmen in 1.8 release. Has this actually been fixed?

@Chris, Yes you can. But the Anger tag is based on ticks. So if you're summoning a Pigman with Anger:1. they go neutral immediately. You need to summon the Pigman with a longer Anger tag

/summon PigZombie ~ ~1 ~ {Anger:32767}

@qmagnet I tried that, it doesn't do anything. I've tried in creative and survival, summoning them from the chat and from a command block. No difference. Pigmen are chill.

EDIT: Nevermind, I had accidentally set the value to high. All's good in the world of angry pigmen. Thanks!