Malachi and the Secret Menagerie — Abigail Hilton

Gwen is settling into third grade, thanks to her friendship with Eve and Malachi's strange family. When the school hamster is kidnapped, Gwen comes to her animal friends for help. The animals are hesitant to get involved in the dangerous human school. However, when the kidnapper steals Effie, the mystery becomes more personal. If they don't find the secret menagerie soon, the sassy feline may never come home. This is book 4 in the Eve and Malachi Series.