What is non-attachment? Simply the recognition of the impermanence of all things.
There is no permanence in life.
All things exist within their own unique life cycle. Animals, particularly our pets, not only teach us to open our hearts, but can also guide us to make an ally of death. Their lives are shorter than ours and, consequently, we witness their natural progress through old age and death. Yet they leave us better for our relationship with them. We welcome them knowing that we will inevitably be parted yet nonetheless made better — more open-hearted and connected with life — for the joy and companionship they bring us.