Def more time is needed. I just got my second Yorkie, a femal 2 1/2 weeks ago and brought her into a house with an 11 year old neutered male who has always been spoiled by us. I like you thought "he loves other dogs and always wants to play with them" so I'll get another and he will love it. Well, I was actually scared when we brought her home. He snarled at her like I've never seen him do before. For a couple of days he wanted no art of her, but now he is slowly coming around. She is always running after him and now they love running and playing. He always let's her win when they are playing with toys!!
You def need to give more time. It's like bringing a new baby home, there is a bit of jealousy in the beginning, but everything will eventually work out.
Good luck. |