After a search by Steck, J.J. was adopted by a family close to the Georgetown campus on August 18, 2013. On August 30, 2013, Pugh announced the arrival of a new puppy, also from the Hochstetler family and an offspring of Treasure, J.J.'s mother, though they come from different litters. Officially named Compatible's John B. Carroll, the dog's middle name stands for "Bulldog", unlike his predecessors, where the middle name referred to the caretaker's name. He was born on June 29, 2013 and was introduced on campus in late October 2013 with appearances at a men's soccer game against DePaul on October 23, and around Copley Lawn and Leo J. O'Donovan Hall. Jack weighs and his color is described as "fawn." In early October 2013, the school announced that Steck would not be the new mascot's caretaker, but that another, not necessarily a Jesuit, would be selected from the Georgetown community. On November 5, 2013, the school choose 2013 graduate McKenzie Stough as the bulldog's caretaker. Besides being an alumna, McKenzie works as a Communications Specialist in the university's Office of Communications. Responding to criticism, the school involved the fourteen-member Bulldog Advisory Committee in the replacement process and selection of the caretaker. The Jack Crew will also be downsized from twenty students to "four or five" with the selection of this new caretaker. Starting in December 2014, Jack began performing at home basketball games by riding a skateboard across the court. For the opening game of the 2015–16 season, the school produced bobblehead dolls of Jack on a skateboard, wearing jersey number 89 in honor of the year of the school's founding, 1789. As Jack got older, he also would ride around the court in a custom remote controlled truck. On July 24, 2019, the school acquired a new bulldog puppy from the Hochstetler family to work alongside the current Jack before taking on the role in the 2019–20 academic year. The new puppy was born January 24, 2019 in Alberta, Canada and was bred by IROC Bulldogs and Casa Grande Bulldogs. His official name is IROC Casagrande John F. Carroll, and he weighs about . The school considers him to be the eighth bulldog and the seventh named Jack.