Genetic problems with Dalmatians are comparable to other large breeds. They include deafness, allergies, digestive troubles, stones and temperament problems. Most popular breeds are over-bred and that leads to temperament problems. While they should never, ever be hyper, teenage Dalmatians can be exasperating. If you can make it to 18 months, you'll have a great dog.
Dalmatians are people dogs.
They need attention, training and to be part of the family. They have exercise needs, they can steal food off the counter. You also have to exercise their brains. Don't make a snap decision and buy a puppy of any breed before educating yourself. Go to the library, contact a local kennel club, talk with other Dal owners, check with responsible breeders and browse the Internet.