Every day, you can find Greg Moore taking two kittens for a walk.

Moore, who has Parkinson's and Alzheimer's, once worked for the government as a communications lobbyist. He moved into Catalina Springs Memory Care facility in 2014 when he was only 67 years old because his illnesses made it too difficult for his wife to care for him on her own.

According to Antoinette Manning, resident care coordinator at Catalina Springs, Moore doesn't usually want to be bothered or speak to anyone. He occasionally perceives normal social interaction as threatening. It's understandable: Many people who move to senior living centers at the end of long, productive, lives — especially those experiencing forms dementia — find themselves frustrated.