3785
They construct a raft from the stems of giant mushrooms in order to cross it , but not before narrowly escaping a family of " Dimetrodons " ( live acted by rhinoceros iguanas with sails on their backs ) .
 animal: " Dimetrodons "
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 animal: " Dimetrodons "