I do not think it is unreasonable to put a dog away in another part of the house for a short while - it can be for the dog's sake as well not to be hassled by kids running round!! No dog is 100% safe all the time!
I have read this with interest - my ds (nearly 6) is terrified of dogs as my parents insisted on letting their insane untrained Jack Russell continually bark and jump at him when he was a baby (let him "sniff", he wants to play etc), generally insisting that "ds had better get used to it". Father lets it run free and jump/bite kids on the fields/park - "ooh, he's alright, he only nips them when he's playing". Wouldn't listen to me or dp at all when we said we didn't trust it. (It has bitten them as well).
They never trained it as they couldn't be bothered/didn't have time as they were working. This dog rips toys to shreds if the toy has a face on.
My mother encourages it and thinks it's cute; and used to ask me "have you got any old/current toys of ds's for the dog to rip up", if she hadn't bought any that week from a car boot.
A) No chance - I did not buy them for a dog to slobber over and destroy.
and B) My ds had a face and a "squeaky" cry. The dog was far too interested in his face all the time. My mother thought it was funny that "the dog wanted to rag baby".
I certainly didn't and neither did dp. DS found it least funny of all of us.
(They also used to let the dog chew/play with toys they'd bought/found, then give them to ds as presents, but that's another story!!)
Dog jumped up and barked and growled at ds for crying / squealing at about 6mths old when I was holding him in their house. They blamed DS for making a noise. That was the last straw - and we told them in future they keep it away or we don't go round. They shut it in another room when we went round after that, but continually whinged and made snide comments that "I had made ds scared" etc, "it's my fault", "poor dog being shut away because of a baby" etc - no, your selfishness at forcing the dog on him did". They wouldn't come to our house as they "can't leave the dog for more than 2 hrs". (They only live a mile away and they went out to work all day at the time - and it's in kennels when they go on holiday for 2 weeks). Not the dog's fault at all - it's my parents fault for not training it. It would have been a nice dog with normal owners. We don't see my parents anymore - this being just one of many reasons - they have no respect for anything all round, not least because ds doesn't want the dog near him and we don't want him getting bitten.
DS is now terrified of all dogs, DD is OK - she has never been near it, and neither of them will again as long as I am breathing.
Friend has asked us to go round and play at their house - can't go as they have dogs and don't want to ask them to put them outside etc, even though they don't mind - ds will freak at just seeing them there. We went once before and had to leave - ds on edge, me stressed cos he was etc, even though dogs didn't bother us. So we lose out all round now.
We walked past 2 Akitas yesterday (on leads and muzzled, so I knew they couldn't "eat" us if even if they wanted to!) (gorgeous but huge show dogs) - I said ooh, look at those lovely furry doggies etc. Both kids thought they were "nice" and admired them, but didn't get too close. Thought "great, that went well". Then we saw 2 tiny terriers further up the street and ds started clinging to me, which dd picked up on and she was scared of them as well. Not good!!
I would love to take them to Crufts next year to "Discover Dogs", but ds would go bananas!! I used to have dogs (yes, they were trained!!) at one time, so I know the "dangers" etc and I know how to approach dogs - but I am also nervous now because of what my mother's dog did. I don't know the answer - and I'm not going to force him to "get over it" - all I can do is "encourage him" to look at or be near dogs. (Doesn't help when we can't go in the park or down the street most days without random dogs jumping and barking at him though). DD has a rabbit that runs free at her nursery, so she isn't too bad and likes animals in general.