Which type of large intestine worm was primarily studied by Ivan Mackerie?
Mongolian death worm The Mongolian death worm (Mongolian: олгой-хорхой , olgoi-khorkhoi, "large intestine worm") is a creature
Toxocara canis Toxocara canis (also known as dog roundworm) is worldwide-distributed helminth parasite of dogs and other canids. "Toxocara canis" is gonochoristic, adult worms measure from 9 to 18 cm, are yellow-white in color, and occur in the intestine of the definitive host. In adult dogs, the infection is usually asymptomatic. By contrast, massive infection with "Toxocara canis" can be fatal in puppies.