Sometimes it's a mercy to put down an ailing creature.
Kacy's dog is very old and can no longer control it's bladder.
Kacy wants to have clean carpet.
Kacy brings the dog to the vet who advises her to have the dog put down because of quality of life issues.
Kacy puts the dog in a cage in her basement and checks on it once a day.
Kacy's dog dies feeling loved in the arms of Kacy.
Kacy's dog eventually dies by itself in the basement.