Pana Hema-Taylor, of Ardgowan School, asks :-

What is the difference between a fox and a fox terrier?

Alex Davies, a vet at Massey University, responded.

Each kind of animal is called a species. Sometimes there may not seem to be much difference between two species. For instance, the bones of a fox and a dog, as well as other parts of their anatomy, are hard to tell apart, although their hair colour, the shape of their faces and the bushiness of their tails are actually quite distinct. A fox terrier is a dog, bred specially in England where people have made a sport of hunting foxes and employ horses and dogs to help them. The terrier (the word refers to the ground) dives into the fox's underground den and bravely attacks the fox in its home.

Unlike the dog, the fox is happy to come near people's houses and steal their chickens, but will never make a pet. Foxes also eat rabbits, and settlers in Australia brought foxes to their new land to try to solve their rabbit plague. Instead, the foxes killed off many species of native animals, and now even live in large numbers in cities living on people's rubbish. Considering what else was brought to New Zealand, it is a miracle that we don't have foxes that do what uncontrolled dogs and cats already do, kill our endangered birds.

Back to your question, it looks as though the biggest difference is the way these two species behave, one making a fine household pet and the other living by its cunning and never being controlled by humans. If we live in a country with foxes, all we see when one has visited us is a hole in the netting and a lot of feathers where our hens were the night before.