Boston terrier is The National State Animal of Massachusetts. Massachusetts has several state animals. Most famous among them are the state dog, the Boston terrier; the state cat, the tabby; the state horse Morgan and the state marine mammal, the right whale. These symbols of Dog and animal were recognized by the state legislature in 1979, 1988, 1970 and 1980 respectively. Massachusetts State Animal and other national symbols are outlined in Chapter 2 of the General Laws of Massachusetts.