1) Setter settler 
The dog flea (Ctenocephalides canis) is a species of flea that lives as an ectoparasite on a wide variety of mammals, particularly the domestic dog and cat. It closely resembles the cat flea, Ctenophalides felis, which can live on a wider range of animals and is generally more prevalent worldwide. The dog flea is troublesome because it can spread ...
(from the article `flea`) ...sensitized after exposure and develop allergies. Species that attack man and livestock include the cat flea (Ctenocephalides felis), the so-called ...
[n] - flea that attacks dogs and cats
Ctenocephalides canis noun flea that attacks dogs and cats