Simplify the following text for a Grade 7 native English-speaking person.
Original: The Dalmatian is a breed of dog whose roots are often said to trace back to Dalmatia , a region of Croatia where the first illustrations of the dog have been found .
Simplified: The Dalmatian ( Croatian : Dalmatinac ) is a breed of dog . It is named after the Adriatic coast of Dalmatia , in Croatia , its first home .