Nits are lice eggs.You can catch them by just pulling them out of the hair of the animal.
I don't think so but pets can catch colds from humans.
A hat will not stop you from getting them. If you share the hat they can be transferred to your head from someone else.
yes
I am not sure but they can get fleas
Yes
they suck your blood and the most dangerous nits out of all are the red nits
nits come from Mexico
Nits grow into lice
Normally the brown nits are the dead nits, and the white nits are the alive one. I don't see the brown ones to be dangerous but I would still remove them. I found that vinger helps remove the nits dead or alive.
No you can't catch fish. SORRY
Some you can some you can' it depends on the heat !They will lay on a rock if they are cold.Somethimes your pets can catch them!:D