Greyhound
Greyhounds are usually bred for racing because of their speed and energy. They need a lot of exercise and attention and strongly dislike rough play. These dogs won’t tolerate small kids trying to cuddle them so it could be dangerous.
French Bulldog
Even though they’re a playful breed that doesn’t mean they’re good to have around kids. They’re very demanding and need training otherwise, they act out by being aggressive or mischievous. They need a firm authoritative approach to be well behaved.