Not all the dogs in Susquehanna Service Dogs' program become service dogs. Although every dog starts on the same path, only 50-60 of them become working service dogs. Being a service dog is challenging. A dog must be able to “turn on” and perform tasks, but then “turn off” and relax when they’re not needed. They must be able to handle the stress of working in public. And most of all, they must enjoy service dog work.