Cannot modify

of wolves (tamed) + health + cannot add them to a team.

Reproduce:

• Summon a tamed wolf with the following command:

  /summon wolf ~ ~ ~ {Owner:"YOURNAME",Attributes:[{Name:generic.maxHealth,Base:99.0d}],Team:"randomTeam",Health:99.0f}

  ("randomTeam" is just a example, my team is already created)

If you check with /entitydata command, you can see that nothing have changed. No team, no extra health.

I suspect that the team of the wolf is constantly set to be the same as his owner, because when you kill this wolf, the death message will be "Wolf was slain [...]", "Wolf" with the same team color than me...