Juvenile Giganotosaurus by SchleichJuvenile Giganotosaurus by Schleich. Hand painted dinosaur figurine by Scheich. Model 15017. 9. 96" x 2. 68" x 3. 82". Giganotosaurus juveniles lived in packs and quickly grew up to be dangerous hunters. Giganotosauruses grew to be almost as large as the biggest carnivore in the history of the earth: the Spinosaurus. The name Giganotosaurus means giant lizard of the South, because this dinosaur was found in Argentina in South America. Fun fact: Its