Tapeworm Segment (Proglottid)
Scientific Name: Dipylidium caninum (most common species found in homes)
Order & Family: Cyclophyllidea / Dipylidiidae
Size: Typically resembles a grain of rice or sesame seed; dries to roughly 2-4 mm in length.
Natural Habitat
Intestines of host animals (dogs, cats) as adults; the detached segments are often found on bedding, furniture, carpet, or near the animal's anus.
Diet & Feeding
The adult worm absorbs nutrients from the host's digested food; the segment itself does not eat but contains eggs.
Behavior Patterns
Adult worms live in the gut. These segments (proglottids) detach and exit via feces or crawl out of the anus. When fresh, they can expand and contract; when dry, they look like sesame seeds.
Risks & Benefits
Parasitic risk to pets causing irritation, weight loss, or scooting. Low risk to humans, but ingestion of an infected flea (the intermediate host) is required for infection in both pets and humans.
Identified on: 3/4/2026