Lacey, an 11-year-old Australian cattle dog mix, has a daily routine. After her long walk, she comes home to get her teeth brushed and enjoys a dental bone as a treat. She’s “never really thrilled” about having her teeth brushed, but she’s grown accustomed to the routine, says Bev Levreault, Lacey’s human. And if you think Lacey’s an example of a particularly pampered pet, you’re wrong. Her routine is fast becoming the norm.