Why Can't I Wear My Dog's Flea and Tick Collars?

It seems like the easiest way to avoid tiny parasites is to just slap on your animal’s tick or flea collar and hike into the woods worry-free. But you definitely shouldn’t.

Hosted by: Michael Aranda

See the video on SciShow's YouTube channel here: https://www.youtube.com/watch?v=DU1CoYlPNQE