Our daughter and family's Blue Cat has been put to sleep by the vet as he had feline leukemia. He gave the family many happy years.
Grandson Darius, 8, was understandably upset and through his tears said, "I want to kill cancer." We can only hope that he or one of his contemporaries might do that one day.
R.I.P. Blue Cat
This book has brought consolation to many cat (and other pet) owners: The Tale of Wisdom and Delight by Mari Lafore