Cool on how she just climbs up on the chair if not invited. She's getting spoiled already...
I would consider the other litter mate. They will have a great bond if you get them together at this age... you just have to get 'ol Blue Heeler to accept them.
*Try giving Blue Heeler some special attention. Like 15-20 minutes a day for just you and him. He's probably feeling left out and jealous that Azul is getting all the "new dog attention" and he may feel that he's getting left out. Give him some attention to let him know that he's not "invisible/not important". He'll appreciate it and maybe accept Azul a little easier. Give him a little "him" time every day to let him know that he's still appreciated.
