Related Clues:

• Roams
• Alley mewers
• Wanders
• Moves away from the flock
• Deviates
• Goes off course
• Homeless hounds, e.g.
• Wanders off
• Doesn't keep to the straight and narrow
• Leaves the path
• Alley cats, perhaps
• Alley fans, in slang
• Doesn't follow the party line
• Some adoptees
• Loses one's way