✔ 最佳答案
One that suits your lifestyle and you will enjoy spending time with.
Since we don't know you - we don't know if you like to hunt and want a hunting dog, you like to jog and want a jogging partner, or you just want a quiet companion to lay at your feet and chill with you.
There are hundreds of different breeds / types of dogs out there. Many have special drives and instincts bred into them to be more helpful to people.
You need to make a list of what qualities you want in a dog (and don't want), and be honest about how much time and effort (and money!) you are willing to put into a dog before you get one.