Zack is estimated to be roughly 3.5 years old and weighs 16#. Zack was adopted in May 2018 and surrendered back to the same shelter in January 2020 for being too active for the adopting family. He is going to need a very Jack Savvy owner. No children, no cats!Zack is hesitant of unknown humans. You will need to be patient, as well as extremely calm. He has the potential to be an amazing companion, and loyal and faithful pet, but is wary and seeks time to bond. Zach has great manners. He walks nicely on the leash, does not bark, and will not jump on you at introduction. He requires a schedule and lots of exercise. He doesn't play with toys but likes balls. He loves other dogs and would do best in a home with another dog that will help him learn to trust people. Zack loves to be social and prefers to curl up in an open lap at the end of the day. You must have a fenced-in backyard, and provide Zack many hours of activity a day!