This includes Maui's body tattoos and long hair ... which happens to be Moana's pet pig, Pua. It's quite possible that Pua could be CGI'd in a similar manner to how characters were created ...

Moana, wearing her outfit from the second film, leans on her oar featuring Maui’s autograph. HeiHei stands on Pua’s head. Maui, complete with his fish hook and topiary tattoos, is on the other ...