Betsy is the pet cat of Randall.
During the events of Black Sails: Season 1 Episode 1 I.
During the events of Black Sails: Season 1 Episode 4 IV.
The wind starts to make the palms pull away from the sand. As everyone is running away from the ship, Randall sees Betsy hiding under the ship. Randall goes after her and the ship leans slightly and starts to crush Randall. Morley and Captain Flint run to help Randall and Betsy runs away.