PIP

Pip is my sons girlfriends dog that we look after sometimes. She is an Angel....she is 14 years old, is a lot deaf and hardly any teeth....but she is like a "spring chicken". Here she is after a long walk getting cozy for the afternoon.
We have toyed with the idea of having another dog ( we haven't had much luck in the past) and the question has raised its head again recently....gave it about a minutes thought and then decided against it again. Why should we get another dog when we can just borrow one like Pip when we need to ?