41479
" Pulex simulans " is the most common species to infest coyotes , while " Ctenocephalides canis " tends to occur only in places where coyotes and dogs ( its primary host ) inhabit the same area .
 Pulex
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pulex