Can a Maltese dog and a pet rabbit live together?

first answer: They could. But most dogs will only mate with another dog, and most rabbits will only mate with another rabbit.

disagreement: No, they definitely could not mate: the above answer is wrong. Rabbits and dogs are completely different species: they can't mate.

Don't let your dog try to mate with your rabbit: it could lead to serious injury, and emotional trauma! If that starts to happen, separate the animals immediately, and don't let them together again if they won't play nice. Never leave them alone together, even if they get along really well.