Daniel replies:

My sympathy at having to part from an old friend. We've had quite a number of pets, and on more than one occasion a replacement turned up bearing an uncanny resemblance in appearance and manner to the one that had left us. It could be transmigration, or it could be that there's a set number of dog and cat personalities, and it's possible to draw the same one more than once. Whatever the case, I urge you to consider repeating the Rosie experience--there's a pup somewhere who needs you.