actually it is the retriever that presents with most dog bites, however part of the reason for this is that the retriever is also one of the most popular dogs, thus if there are more of them, then statistically more of them will bite iyswim.
I am actually horrified that the kennel club recommend staffies as one of the only dogs suitable as pets, over breeds like labradors who are notoriously gentle dogs.
However wonderful staffs are reported to be with children, they have an awful reputation for being extremely agressive towards other dogs. So all you would need is a child to come between the pet staff and its intended victim and you could have a nasty bite..
I think the issue re leaving children alone with dogs is relevant depending on the age of the child tbh. Because contrary to what seems to be popular belief by some, dogs do actually very rarely turn on someone for no reason.
So it is important to teach our children to have respect for dogs, but also to be aware that when they are very little they just don't get the idea of the boundaries they should allow between them and the dog and thus they should be supervised.
Generally when these dogs attack small children they are either:
sed as guard dogs and have somehow gained access to the unsupervised child, and because they have been kept to be agressive they have done what they are intended for with disasterous consequences. In such cases the owner of the dog is surely completely responsible.
or they are young children who have been left unsupervised with a dog, in which case nobody can really know what causes a dog to attack a young child, but having seen the fascination children have with poking/prodding/pulling at animals, perhaps the child has just pushed the dog too far again, with disasterous consequences.
I think it's easy to say to never leave children with dogs because "dogs are unpredictable," fact is, children can be unpredictable too, and perhaps a dog wouldn't bite if the child didn't tease/poke/pull it.
If a dog bites a child the dog is always perceived to be in the wrong. Yet surely one should also question why people leave children who cannot yet be trusted to be kind to dogs alone with them?
I am a dog owner and if one of my dogs bit someone I couldn't keep the dog any longer.
However I think that it's not wrong to ask the questions, and to wonder how many of these dog attacks could be avoided if the humans just took some different steps...