[Hugh and bosco]

Hi guys. I have a question that i would like peoples answers/ experiences or suggestions. I have a fiesty 3 year old male yorkie. He is really well tempremented and listens to commands 90% of the time, and is your usual great natured yorkie but he also has a wicked indepndent streak. But like i said can also be fiesty and single minded, and he can get a little jealous or starts to attention seek when people are around me. I am thinking of getting a new addition to our pack and was wondering how the best way would be to go about deciding on whether to get a female or another male, and then how to go about the right way to introduce them. And also if by getting another yorkie to keep him company and play with him and be his friend would that potentially have a calming and relaxing influence on him in a more fullfilled way by having constant company for when im not there? Thanks in advance for any advice or suggestions.