Barking Big: A Veterinarian's Inspiring Story of Perseverance

Dan Castillo recalls the unusual path he took to become a veterinarian in Barking Big.

He recalls his early childhood as a wild youth growing up New York and explores his familial connections to the Dominican Republic, where he vacationed. It was there that he went to veterinarian school, where classes were taught in Spanish.

He lived through two elections in the Dominican Republic, where the entire family would stay up all night surrounded by armed guards. They'd wait for the vote count ...