Of course it's not wrong. You know what they say about people who have happy marriages marrying again soon after they lose a spouse - because they experienced happiness in a relationship and want it again. True here too. I'm one of those who mourns, and I did without after the death of each dog way too long, which is why I got a second dog some years ago. There's an age gap, and my theory is this way I'll never be dogless again.