Today's Expert Film: Zoologist Mike talks about how tortoises have evolved and dog trainer Alison Burns explains how dogs, like Floss, have evolved and developed.

This engaging lesson explores how animals like dogs and tortoises have evolved over millions of years, highlighting the process of natural selection and adaptation. Discover how selective breeding has shaped dog breeds for specific traits and how tortoises developed their iconic shells as a survival mechanism, illustrating the incredible diversity of evolution in the animal kingdom.