We adopted our chihuahua mix when Mojo was 7 months...they never ever get into a fight. They were always together...Mojo had sooo much more fun with him...it wasn;t that much of a difference caring for 2, i mean, i already had a routine with Mojo so i only added a extra body to the routine
Now that he left Mojo still misses him and looks for him, same with Byron...i can't wait to get my new yorkie