Shirley was born and raised in San Francisco. She attended the University of California Davis where she earned her Bachelor of Science Degree in Animal Science then got her Associate in Science Degree in Veterinary Technology from Foothill Community College. She obtained her license soon after graduation, making her a Registered Veterinary Technician. Like everyone at Coastal Cat Clinic, Shirley loves animals. However, Shirley has a particularly soft spot for guinea pigs. Shirley currently has a herd of old lady guinea pigs as well as one to two foster guinea pigs. She is also owned by two cats, Lionel Ritchie and Charles M. Sparks, and a dog named Oliver.