(Back to Canine Diagnostic Key)
1. Elongate Cylindrical Worm (Nematode or Acanthocephalan).
.......... Go to: 3, 4, & 5
2. Flat Segment (Tapeworm Proglottid).
.......... Go to: 6 & 7
3. Anterior end squared-off with cuticular collar.
.......... Physaloptera sp.
4. Anterior end rounded-off with 3 fleshy lips
........ Toxocara canis
5. Anterior end with a spiny proboscis.
.......... Macracanthorhynchus ingens
6. Oval segment with 2 lateral genital pores and egg packets released on proglottid squash.
........ Dipylidium caninum
7. Rectangular segment with 1 lateral genital pore and single spherical eggs released on proglottid squash.
........ Taenia pisiformis
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