Introduction to Diagnostic Medical Parasitology
Toxocara canis
L3 larvae
Larvae stage 3
Size: 350—400 x 15—20 µm
- Straight esophagus (extending about a third of the body length)
Egg in dog (!!) feaces
Egg
Size: 80—85 µm
- Golden in color
- Spherical to slightly pear shaped
- Thick-shelled
- Pitted surface
Eggs can persist in the environment for years.
Eggs are found only in the feces of definitive hosts (cats and dogs)