E ARC provided by NetgalleyLauren loves dogs， but her stepfather is allergic to them， so she can't one of her own。 Luckily， her friends Ruby （who wants to be a reporter）， Emelyn （the fashionable one） and Myka （who has a large family and likes sports） all agree to volunteer at a local rescue facility。 Mr。 Turner， who is in charge， is glad to have them read to the dogs to help socialize them and get the adjusted to being with people， but he also has the girls wash bowls， clean cages， and do other E ARC provided by NetgalleyLauren loves dogs， but her stepfather is allergic to them， so she can't one of her own。 Luckily， her friends Ruby （who wants to be a reporter）， Emelyn （the fashionable one） and Myka （who has a large family and likes sports） all agree to volunteer at a local rescue facility。 Mr。 Turner， who is in charge， is glad to have them read to the dogs to help socialize them and get the adjusted to being with people， but he also has the girls wash bowls， clean cages， and do other less glamorous jobs。 Lauren notices that the dog to whom she reads， Rhett， is not getting adopted because he is older， and she comes up with an idea to help。 After her step brother tells her that she is too young to really help the world （the girls are in the third grade）， she decides to put together an event at her Uncle Patrick's cupcake shop to have people meet the dogs， eat cupcakes， and hopefully adopt a pet。 Nothing goes smoothly， and the friends end up having an all day baking session at Lauren's home， but in the end， many of the pets do get adopted， and the shelter also has more people volunteer to help。 At the end of the book， there are a quantity of two page biographies of a wide range of "invincible girls" who have done work with animals。 Strengths: Lauren is a very energetic character who does not let other people get in the way of getting things done！ She and her friends take their task seriously， even trying to get their teacher to adopt a pet （in a really charming scene where the teacher thinks they are trying to set her up with a boyfriend！）。 I love the energy， and the fact that they don't shy away from working hard。 Lauren's family， with her stepfather and stepbrother， seemed nicely realistic。 Her uncle who owns the cupcake shop is gay， and the friends have diverse backgrounds。 I really liked the short biographies， and am looking forward to the next book of the four book series， which brings in art。 Fans of Coco Simon's different series will like the Invincible Girls and their club。Weaknesses: Having just adopted an older dog， I love the message， but think that the shelter probably would have a much more stringent application process， and there might be health concerns about home baked cupcakes。 Being an adult really takes the fun out of things， doesn't it？What I really think: I will pass on purchase for middle school， but would definitely purchase for elementary school libraries。 This would have been one of my favorites had I read it in early elementary school。 。。。more