Cheryl undertakes dramatic surgery to amputate the leg of King, a 12-year-old Staffie with a cancerous lump on his limb - but will this dog be able to cope with just three legs? Meanwhile, Cat is being given the runaround by a group of Humboldt penguins as she visits a wildlife park in Staffordshire. And Rory meets Ziggy and Stardust, two adorable dogs rescued from the streets of Antigua in the wake of devastating Hurricane Irma.