Hi. I recently bought a Red Footed female tortoise from a pet store. The guy said she was around 18 months old. I've been feeding her fruit and leafy vegetables every day. Lately though, the edges of her shell seem to be turning a brown color and slowly starting to curve over. She loves strawberries and has them every day. Also, when she walks, she sort of drags/pulls her back legs and doesn't lift up her shell.