Is it time? Consider your pet’s quality of life. When a pet’s quality of life has deteriorated to the point when they are:
 

• in persistent physical pain or discomfort

• if they are unable to get up and move adequately to eliminate consistently outside (or in their litterbox)

• if they have severe restlessness, anxiety, or vocalization

• if they persistently soil themselves or their bedding and/or develop pressure sores

• if they are not eating or drinking adequately for hydration and nutrition

• if they are not cognizant of their surroundings or owners

• if they have little or no interest in everyday activities

• if they are having labored breathing (or need oxygen) or frequent seizures, despite medication

• if they have metastatic cancer

Then it may be more kind to consider euthanasia to help prevent further decline or suffering of a beloved pet.