If the host is a cat, though, most larvae waste no time encysting and continue their migration straight to the lungs. Step Three: These second stage larvae can remain encysted happily for years. These prey animals that carry worm larvae are called paratenic hosts. If the new host is a member of another species, such as a rodent, the larvae wait until the new host is eaten by a cat. If the new host is a cat, the life cycle proceeds. The egg hatches in the new host’s intestinal tract and the young worm burrows its way out of the intestinal tract to enclose in the host’s other body tissues. Step Two: The egg the second stage larva is picked up orally by a cat or by some other animal. However, if the conditions are not favourable, eggs can remain infective for months to years. This will take about a month for the egg to become infective. The embryonic worm develops in the outdoor environment for one month before it becomes able to infect a new host. If a fecal sample is tested, the eggs can be detected. Step One: Toxocara eggs are passed in the host’s feces. It is crucial to understand this life cycle if effective treatment is to be pursued. Toxocara cati has one of the most amazing life cycles in the animal kingdom. They have their own roundworm: Toxocara canis. Note: dogs cannot be infected with Toxocara cati.
Consuming infective worm eggs from soil in the environment, generally through normal grooming.In cats, there are three ways by which infection with Toxocara cati occurs: leonina can infect both dogs and cats so identifying this roundworm might be helpful in indicating which pets in the household are at risk for further contagion. Both are treated with the same medication protocol so when eggs are seen on a fecal flotation exam it is not necessary to determine which species is present. There are two species of roundworms affecting cats and kittens: Toxocara cati and Toxascaris leonina.
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