(ages 7 - 9) The "Abby and Tess Pet-Sitters" series features third-grader Abby, an aspiring veterinarian who goes into the pet-sitting business with her sister, Tess. In Lizards Don't Wear Lip Gloss, Abby and Tess think they are ready for the challenge of looking after Angus, a lizard that hisses and bites. But when this master of camouflage disappears, Abby is quick to blame Tess. Can the sisters find a way to work together before Angus's owner returns?