18 Aug No Comments Neumeister Animal Hospital Case of the week


Mallophaga - Chewing Lice

Trichodectes canis, a suborder of mallophaga, was found when Dr. Neumeister viewed the hair and flakes under the microscope.


A client presented with a 7-week-old puppy for his first puppy exam. The client noted that she noticed something moving on the puppy’s skin and that it seemed extremely itchy and had dandruff-like flakes.

Rubbing, scratching, and biting of infested areas can be signs of louse infestation. Heavy infestations may even cause pruritus (severe itching of the skin), intense scratching, a rough matted coat and sometimes patchy hair loss. Chewing lice are attached by their claws or mandibles to the base of a hair, usually on the head, neck, and tail. Treatment of this puppy  included repeated doses of anti-paraistic/anti-lice preparations, because all canine lice nits are usually not killed in single application. In addition an anti-parasitic drug was prescribed.