Need help coming up with a book title?

It’s a story about kids who all come from different backgrounds, normally bad ones, that grow up in a guy who saved them all’s house, who they call Dad. They’re teens in the story. The most important part is the fact their personalities are all based on animals, (i.e. dog is an energetic and athletic person) So is their appearance, (i.e. bunny wears a fluffy sweater) but they aren’t named after their animal, it’s simply their nickname. None are the same animal, except the twins. The story is based around the fact they were home-schooled a long time, and it’s their first time in a real high school.