Do you live in dread of the dog hurting the family's pet rabbit? With some dogs, this is a very real possibility, because of their natural hunting instinct. This is especially true in terriers, since they were originally bred to hunt down and kill vermin,
Training can overcome the hunting instinct, but the wise pet parent is cautious never to put temptation in the dog's path and to supervise them around small animals at all times. Indeed, successful training is the result, not of suppressing that hunting instinct (which will always be present), but of making the owner more interesting than the rabbit so the dog doesn't give chase.
It is never a good tactic to tell a dog they can't do something. This alone results in faulty learning, where the dog is inhibited in your presence but thinks it's OK to kill rabbits when you're not around.
Instead, it's best to teach the dog an appropriate way to behave around small furries, such as to sit patiently and wait for you. In addition, this technique relies on making the pet parent more interesting than the rabbit, by training a 'look' command, and rewarding the dog for focussing their attention on the owner.
In time, you can also teach the dog to be calm around rabbits, so the urge to chase is lessened. However, be aware that in terriers this prey drive is so strong that the dog may never be trustworthy enough to be left alone with potential prey species.
You need minimum equipment, mainly ultra-tasty treats and a leash. It is, however, hugely helpful to have realistic toy rabbit, and perhaps a friend to slowly move the rabbit with a piece of string. Once the dog's training is sufficiently progressed, you can also introduce the dog to rabbits that are safely caged.
Start by teaching basic commands in a quiet environment. As the dog masters 'sit' and 'look', take the training outdoors. Ultimately, you'll introduce a stooge toy rabbit, to attract the dog's attention as you teach them self-control.