what's your opinions on animals around your newborn

I just don't feel comfortable about my newborn (4weeks old )  being around 3 cats and 2 dogs ( all house animals ) my MIL owns these animals they live 45 mins away and I don't feel comfortable about bringing my baby there with so many animals around and that shed hair!! How would you feel in this position? I have not said this is a problem for me but have told my fiancé