The dangerous effects of parasites on their hosts are examined. Biologist Dan Riskin, assisted by doctors and experts who witnessed each case, leads the scientific discussion about each parasite.
Discover everything about your feline friend. This series highlights the frisky, feisty and contagiously cute behaviors that helped these cheeky creatures overtake dogs as the most popular pet in America. Learn about the various breeds, their genetic history, famous felines and quirky cat facts.