Dipylidiosis (D. caninum)

GastrointestinalParasiteCanineFelineNew

Key Points

Dipylidiosis, caused by Dipylidium caninum, is the most common tapeworm infection of dogs and cats worldwide
It’s spread through ingestion of an infected flea (or less commonly a louse) intermediate host
Disease is typically subclinical or mild but scooting and perianal pruritus can be seen
Diagnosis is usually based on identification of motile “rice grain”-like proglottids in faeces or around the perineum
- Often noted by concerned owners
Praziquantel is the treatment of choice but anthelmintics must always be used alongside flea control to prevent reinfection
While it’s rare, zoonotic infection can occur and it’s most often seen after young children accidentally ingest infected fleas

Differential Diagnoses

Other cestodes (Taenia spp., Echinococcus spp.)
Anal sacculitis
Anal sac impaction
Flea allergy dermatitis

Educational content only. This factsheet is for general veterinary education and is not a substitute for professional veterinary advice, diagnosis, or treatment. Not for use in an emergency — contact a veterinarian or emergency service. Full disclaimer →