Nope not at all. I have dogs and will always have them outside if I know someone who is coming that doesn't like dogs or kids who freak at dogs. Other friends are ok as they like them and used to dogs.

My SIL has a dog who I do not trust at all has bitten people in the past and she puts him away when my kids are there as she knows I am worried about him.

Not wrong at all to ask fr dog not to be around your kids.