An "active family" refers to a family that engages in physical activities together, such as exercise, outdoor sports, or games. They enjoy being active and make it a regular part of their lifestyle. Full definition
They can be wonderful pets for active families with enough time to devote to training, socialization and play. (acdra.org)
They are extremely energetic and fast, so they do well with active families who will be happy to take them for a long walk or run every day. (soonervet.net)
Though they are small, they do require a lot of exercise and are best suited for active families who live in homes with plenty of space to run. (petwave.com)