not sure of what the question you are trying to ask. however cattle dogs are working dogs and they usually nip the heels (hence the name blue/red heeler) of cattle to make them move. on the other had a good dog will not bite the cattle there is a difference, he should just nip them on the heel, or hock as its is called on cattle, and not bite which may cause damage meaning he shouldn't make the beast. if he bites the animal and causes lacerations on them they can get infected and it also looks bad when trying to sell them. just one more point most good dogs can make cattle move without having to nip, nipping should be a last option for them. the presence of the dog and his lunges and barks should make them move.
A Nip.
Heelers nip by nature because that's how they herd cattle, you can correct it by working the dog until it becomes tired
That dog breed is called an Australian Cattle Dog. or it could be an Australian kelpie(i have 1) The Australian Cattle Dog was derived from crossing breeds including the Dingo, Kelpie, Bull Terrier, and Dalmatian. This breed is also known as the "Heeler" because the dogs would crouch behind the cattle and nip at their heels to herd them.
A cattle dog usually refers to the blue heeler, red heeler and Queensland heeler. It has been specially bred for Australian conditions, for rounding up cattle and helping with mustering. Because it is bred to be a "heeler", it nips at the feet of the cattle to round them up, and so a cattle dog, or blue heeler, that is a family dog often develops the tendency to nip at people's feet to try to round up its "pack". It is not an ideal family dog unless there is both a large backyard and opportunity for it to get plenty of exercise. The blue heeler quickly becomes bored, as it is bred to work.
Stay out of that yard, or their dog might nip you. During winter time, Jack Frost may nip at your nose.
The answer is nip father
their is no such thing as a bad dog just bad owners! you clearly have not socialised or trained your dog properly and he is in danger of being put down if any of these neighbours where to report this , it is also possible that the agression will get worse if left untrained. buy a mussle for your dog so that it can not nip at children or strangers and take it to dog training or buy a book on dog training. it is normal for a dog to be protective of its pack/family and nip at strangers or children but it is not acceptable and you need to deal with it before your dog gets taken from you and destroyed! i hope that helps, i am a dog trainer please trust me on this it is a serious issue.
because the dog is invading the other dogs grounds or because they both are the alpha
The Cardigan first arrived in Cardiganshire (its place of origin) with the Celts in 1200 BC. The breed became useful because the Crown owned practically all land, and the tenant farmers were permitted to fence off only a few acres surrounding their dooryards. The rest was common land, on which the crofter was permitted to graze his cattle. Instead of herding the cattle, the Corgi would nip at their heels and drive them as far afield as desired Herding
They will if someone walks up behind them when they are not expecting it or if they get hurt nad are afraid you will hust them more.
Corgi dogs were originally bred for herding livestock, particularly cattle. Their short stature and agility allowed them to nip at the heels of larger animals to move them where needed on the farm. Today, they are popular companion animals known for their playful and affectionate nature.