Book 1

Fight for Life

by Laurie Halse Anderson

Published 22 January 2000
With the help of her veterinarian grandmother and the other volunteers at the Wild at Heart Animal Clinic, eleven-year-old Maggie rescues sick puppies from an illegal puppy mill.

Book 2

Homeless

by Laurie Halse Anderson

Published 22 January 2000
Sunita and her fellow volunteers at the Wild at Heart veterinary clinic become involved in efforts to save a bunch of feral and abandoned cats with the help of Dr. Mac.

Book 3

The Trickster

by Laurie Halse Anderson

Published 22 January 2000
When he and the other volunteers at Dr. Mac's veterinary clinic go to help out at Quinn's Stables, David makes several serious mistakes and must prove he can be trusted before Mr. Quinn will let him even be around the spirited horse that David wants to ride.

Book 4

Manatee Blues

by Laurie Halse Anderson

Published 1 January 2000
Brenna, Maggie, and Zoe go to Florida to visit a manatee rescue center, where they learn about these endangered marine mammals.

Book 5

Say Good-Bye

by Laurie Halse Anderson

Published 1 March 2001
Seeing Jane's dog, Yum-Yum, help cheer up children in a cancer ward makes Zoe think about having her puppy, Sneakers, trained to do therapy, too, especially when Yum-Yum becomes very ill.

Book 6

Storm Rescue

by Laurie Halse Anderson

Published 1 March 2001
Sunita Patel is book smart and good with cats. When a hurricane approaches, Sunita realizes that Lucy, a diabetic cat with a broken leg, is in danger, along with her owner, Mrs. Clark. When the vets are called out on emergency, the evacuation starts. Will Sunita be able to save Lucy or will she be a scaredy-cat?

Book 7

Teacher's Pet

by Laurie Halse Anderson

Published 1 March 2001
Adjusting to middle school becomes easier for twelve-year-old Maggie when she finds that her biology teacher, who is blind, can learn a few things from her about working with his guide dog.

Book 8

Trapped

by Laurie Halse Anderson

Published 16 September 2001
Brenna, one of the volunteers at the Wild at Heart animal clinic, is horrified to find a dog caught in a trap in the local nature preserve, but subsequent events prove that every story has two sides.

Book 9

Fear of Falling

by Laurie Halse Anderson

Published 29 August 2001
Twelve-year-old David has conflicting feelings when his father, who taught him to ride the horses he loves so much, returns to spend Thanksgiving Day with the family after being gone for a year.

Book 10

Time to Fly

by Laurie Halse Anderson

Published 1 March 2002
There's a flock of parrots in Zoe's backyard! No one knows where they came from, but they aren't as big a surprise as the sight of Zoe's mother, who has just arrived from California. She wants Zoe to move back home with her - something Zoe has been waiting to hear for months. But why does leaving Ambler and Dr. Mac's place seem so much harder than she expected?

Book 11

Masks

by Laurie Halse Anderson

Published 1 September 2002
After Sunita's beloved pet cat, Mittens, gets injured on her watch, she wonders if vet work is right for her. She takes an internship at a research lab, but learns that they test on animals and eventually put them to sleep. Sunita loves animals, but can she find a way to work with them without harming them?

Book 12

End of the Race

by Laurie Halse Anderson

Published 31 December 2002
After treating an injured greyhound at her grandmother's veterinary clinic, thirteen-year-old Maggie learns about the abuse of greyhounds in the dog-racing industry and vows to put a stop to it.