To reduce contact after dog bit a child

[SerendipitySunshine]

I've become friends with the mum of one of the kids in DC's class. Kids (primary age) are friends too. They live very close so often pop in and out of each other's houses, and it's great. We have loads of activities planned together over the summer holidays.
Yesterday I saw their elderly lap dog snap and bite another child. Admittedly, this child was teasing it, but it bit without warning. It has growled at children before. They love the dog, and are minimising what happened.
Now I feel unhappy with my child going to their house unsupervised (by me), as the dog is always around. WIBU to cancel activities at their house?

Dogs growling is a good thing it's a warning, a dog that's taught not to growl will go straight to a bite.

Firstly, it wouldn’t have been without warning. Dogs show many signs before resorting to a bite but sadly, many people with dogs are ignorant and have not learned dog body language.

You are absolutely not unreasonable to not allow your child there unsupervised. Children should always be supervised around dogs anyway. I 100% trust my dog but would still not allow children to be alone with her. These people minimising what happened shows they do not take proper responsibility

Doesn't matter why. Doesn't matter the legal position either. You deliberately frighten an animal it's probably going to bite you and you'd soundly deserve it. It's an important life lesson and will teach this child not to be such a twat in future. Yes kids do stupid impulsive things but he'll only do it once now that he has borne the consequences. This is how we learn.

No way would I let my child be around a dog that's bitten another child. Can't believe you're even contemplating it tbh