I am currently 7 months into my maternity leave and starting to think about childcare for my son. My parents and my husbands parents have offered to look after him for the days he will not be in nursery. I have some concerns about my in laws looking after him as they have an unpredictable dog who growls and stares aggressively a lot and once bit my brother in laws leg. He gets very possessive of items. I feel like it's going to be an extremely awkward conversation to have as I don't feel comfortable leaving my child with them but then this is affecting then spending time with their grandson. My husband agrees it is an issue but is still keen for them to look after him so that they get time with our son. He thinks they'll keep the dog separate but I'm not convinced and wouldn't be there to see what's happening.
We have a dog ourselves so it's not that I don't want our child being around dogs, but their dog isn't trained properly and can be very temperamental.
Advice?