I didn't know any of this until yesterday. Until I got my first tick. On my head.
After apologizing for EEEEW-ing at me, my human removed the critter with a pair of tweezers and explained why, aside from being gross, having a tick on your head (or anywhere else) is a bad thing.
Ticks suck your blood. They can lay eggs that hatch billions of new little blood-suckers that'll come into the world hungry. But worst of all, they can transmit disease. A whole bunch of diseases actually, and some of them can kill you.
Depending on where you live, the ticks in your area can carry germs that cause:
- rocky mountain spotted fever
- tick paralysis
- tick fever (canine anaplasmosis)
Probably a good idea since I like to sleep on my human's head and ticks like to suck human blood too.