In kitties, mast cell tumors are most often seen in the skin of the head or neck, but they can occur anywhere in the body. Cats with these tumors are usually middle age or older (4-plus years of age), but any cat can develop a mast cell tumor, including kittens.
Body lice can live anywhere there is hair on the body. Body lice are much hardier than other types of lice and can live up to 10 days without a human host. On a human host they can survive for up to three weeks, laying up to 88 eggs during their lifetime on their host.ithout a human hosts, most lice will only live for a maximum of 48 hours. This is why sealing clothes and toys after infection in a plastic bag is a great way to get rid of lice. Lice on a human host can survive two or three weeks. However, living lice lay eggs.
Life Span Without Food. Nits, or lice eggs, canât live without a human host. They need the warmth of the scalp for incubation purposes before they hatch. Once theyâve hatched, they need the nourishment they get from human blood.Nits that are dislodged from a hair shaft will most likely die before they hatch.arasites need a host to provide nourishment so they can live. Head lice form a parasitic relationship with humans as their host, with blood from the scalp as their source of nourishment. Head lice live close to the scalp, and sometimes the eyelashes and eyebrows.