Increases in walking speed dramatically raise calorie burn per mile as well as per minute. Indeed, at about 12:30 per mile, walking hits a point where it burns about the same calories/mile as running. Walk faster than 12:30 and you will burn more calories/mile than running at 10:00 pace.
Like Boston Terriers in general, they have sensitive digesture systems and they can get some health issues, including cataracts, cherry eye, allergies, deafness, and luxating patellas. The Red Boston Terrier is probably the most popular color that is out of the Boston Terrier norm.
They are friendly and can be stubborn at times. The average life span of a Boston is around 11 to 13 years, though some can live well into their teens. The American Kennel Club ranked the Boston Terrier as the 23rd most popular pure-breed in the United States in 2012 and 2013.