All told, there are 18 canine volunteers at the hospital, said Cindy Cattie, who coordinates the program. Each is trained to tolerate chaotic situations and remain calm among wheelchairs and beeping heart monitors. The dogs are certified and go through an application process. Most visit weekly or monthly. Snowie and Bond went each Tuesday and Saturday for four hours or more, and on every holiday. They put in 231 hours in 2015 alone.