Here's something I think I might be useful for!
My mother runs a dog rescue. Outside of the dog rescue she has 9-11 dogs in the house at one time (dogs passing away, foster puppies that need TLC). She is a wonderful woman and I wouldn;t want to stop her doing what she does. My children love the dogs but I insist that new dogs are not around them. There are four or five I would be ok with, but even then I won't allow them to be around my children unsupervised.
A) Pack mentality. This is not relevant in your situation, but that is the reason for my argument.
B) Kids are small and dogs are big and can be unpredictable.
My mother was offended the first time I said I wasn't comfortable with the dogs around the children. She said 'but theyre harmless'. I still wasnt comfortable and just said that I wasnt leaving the kids with her unless she could promise me that the dogs would not be around the children.
My kids were younger, and would have no hesitation pulling on tails or trying to dress a dog up as a princess.
Im not anti-dog, I have a rescue pup of my own. However I did have to put my foot down and say no.
Can he stay out the back, or be in a different area fenced off with a stairgate?
My mother wasnt happy, but I said that if they dogs were not away then the kids couldnt come over anymore.
YANBU.