Description: A feline roundworm (Toxocara cati) egg. Photo taken through a microscope at 400x. Date: 29 July 2006 (cropped on 2006-07-31). Source: Own work. Author: Joel Mills.
Description: Toxocara cati. Close-up of the anterior end of Toxocara cati, showing the three lips characteristic of ascarid worms. Date: 4 March 2008 (upload date). Source: CDC - DPD. Author: CDC - DPD.