Ziva wasn't very happy when I bought Abby home when Ziva was two. Ziva is now 5 and Abby 3 and they do not play together
My daughter has left her 8 yo rescued yorkie here for the summer and Abby is having a riot- they play kissy face all morning- Ziva just stands off to the side.
Ziva would have been happy being an "only"...