The grief is natural....and in it's way good. Trying to defer it by bringing someone new home right away, is sort of like the transition girl you find to fill the gap right after a bad breakup. You'll always be comparing...rather than enjoying them for what they are. When you've moved along far enough, that you are not looking to fill a hole, the "right" personality will find you. It may be a dobe....it may be a terrier....but you'll know him/her when you meet. And you'll know it's time. Like any kind of love, the more you try to force it, the harder it will be to find, and the more wrong paths you will go down. It's not like replacing a beloved vehicle or TV.