@Picklypickles
I don't think people with young children should have dogs at all if I'm honest. If you must own a pet get a cat or a guinea pig.
I grew up with a cat and dog.
Cat bit and scratched me, dog never did.
That isn't to say that I think young children and dogs are a good mix. We had a rescue dog a good few years before we had our first baby, she was docile and frankly not in the least bit arsed by anything (still the same she is 15 or 16 now and still incredibly laid back) however we still never, ever, left the baby near her without supervision.
We got our second dog last year with a 7 and 4 year old, he was just a pup so we worked with a trainer and did a lot of work on getting him used to having his face/ears/paws touched, he is nearly 2 now and lovely (well an arsehole as all young dogs are) but he is never left alone with the kids, they rile him up and get him overexcited and while I don't think he would bite them - he still might and I won't take the risk.
My IL's have a miniature Daschund which is tiny so obviously harmless right?! Yeah whatever, they treat it like a baby and it has snapped at my DC loads so they are no longer allowed around it.