Matilda fights Martha the Mammoth
Matilda is a young female T-Rex featured in all Prehistoric Park episodes.
She (and her brother Terence) was brought to the Park by Nigel Marven, after another T-Rex kills their mother.
Matilda seems more violent than Terence, since she almost killed him in the fifth episode (The Bug House).
She was also involved in "the mass break-out" of the sixth episode, in wich she fought the Mammoth Martha.