Well, you’re boned
Are you one of the unfortunates who’re having trouble with the Children’s Week quests?
You’re boned. Blizzard says:
We are aware of the issue that is currently affecting the Children’s Week quest line in Dalaran which does not allow players who have completed the quest line last year to take part in it again this year. We do not currently have a fix planned to address this issue at this point in time.
To clarify, this issue won’t be able to be resolved for Children’s Week this year. If you completed the quest previously you won’t be able to complete it again for the other pet this year.
Next year, perhaps?