Unstoppable: true stories of amazing bionic animals

Albie, Felix, and Fawn: finding strength in their differences at a farm sanctuary

Allison: paddling in new directions with her ninja suit

Alyna: helping patients take steps toward recovery

Brutus: high stepping on four faux paws

Bunker: regaining the use of both legs

Chhouk: putting his best foot forward

Chris P. Bacon: hamming it up as an internet star

Estella: a rolling rodent rocks a mini-wheelchair

Hudson: paying it forward as a top therapy dog

Molly: leaving smiles wherever she goes

Mr. Stubbs: swimming like an olympic champ

Tripod: walking with a new spring in his step

Vincent: moving forward on titanium legs

The tail end.