Julian has to deliver the biggest calf he has ever encountered, while Peter has to perform testicular surgery on a show dog that may bring a premature end to his performance career. A Clydesdale horse that recently needed foot surgery now also needs dental treatment - and the specialist equipment Candela uses for treating teeth is too small for the massive animal.

Peter tries to save a lamb that was badly injured during birth. A rottweiler locates a bag of class A drugs - but his owner is more concerned that he has eaten another bag. Anne discovers that wearing glasses can create problems for a vet, a one-week llama takes a turn for the worst, and a difficult birth leaves a cow struggling to feed its calf.