Egbert, Yoko, and Shelly are three baby Tyrannosaurus from Ice Age: Dawn of the Dinosaurs, consisting of two males (Egbert and Yoko), and one female (Shelly).
A blue heeler lived a solitary life in his swamp until he meets a sloth who unexpectedly becomes his best friend as they must rescue a princess with a dark secret and send her to a greedy ruler who dumped fairytale creatures into his swamp.