47793
The male midwife toad ( " Alytes obstetricans " ) winds egg strings round his thighs and carries the eggs around for up to eight weeks .
 midwife toad
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 midwife toad