Since Goo Goo arrived, Shio there have been some changes with Shio's personality at home. 1. Protectiveness
The day before Goo Goo arrived was the day that she was spayed. Immediately upon meeting her, Shio decided that it was his job to protect our foster from shadows and babies by ferociously barking at them. He also goes to her crate after greeting us when we arrive home or wake up in the morning to make sure that she's okay.
Day after day, Shio begs for Goo Goo to pay attention to him and play with him. He will play bow, bark, and wag his tail. The works.
Apparently now that we have a second dog in our home, Shio is determined that there will be a pending famine because he has to share some of his food. He gobbles up his food much quicker than he normally would and then charges for Goo Goo's leftovers.
4. Less Competitive
Usually when Shio walks next to another dog on a leash, he makes sure that he's in the lead even if only by a nose. Not so with Goo Goo.
I'm not sure whether dogs experience jealousy or not but we've noticed that he will make sure that he has more attention when we greet Goo Goo. This subject will have to further be explored.