They only give love

Often their death is serene and it doesn't bother anybody; it directs a last look of gratefulness to the idolized master that one day picked up him in the street and everything has finished. But sometimes, because of painful or incurable illnesses, it is necessary to appeal to the euthanasia, that is to say, to cause the death by means of an injection that stops the beats of the heart. The veterinarian will be in charge of that. 

The death is the only displeasure that the dog gives to his master. He has left forever. 

But, we walk to the corner and we see another dog; he looks like him. And he looks at us with anxious eyes. You only have to lengthen the hand toward him so that he is your new partner, with all their baggage of suffering and of love.