No, a well bred Dalmatian is not hyper! But, Dalmatians are a very active breed. They were originally bred to run 20-25 miles a day with a horse and carriage. This trait has stayed with them over the years. Because of this, Dalmatians do require a great deal of exercise especially younger Dals. A fenced-in yard is a necessity for every Dal. If you don't have a fenced-in yard, plan on walking/running/biking your Dal a couple of miles each day! A Dalmatian that does not get enough exercise will get bored and may become destructive.