Yes, lots of members enjoy house and pet sitting as a family. They simply share one membership and add plenty of information to their profile that makes it clear they're sitting together.
Offering more hands to play with the pets, many pet parents encourage families to apply for their sits. In fact, you can even use the search filters to find sits that have been listed as being family-friendly.
Trusted tip: Take a look at this families story of sitting together all over the world