Millions have been transfixed by videos of Karis Dadson, a California teenager who shows pigs at livestock competitions. She finds the whole thing very weird.

Bovines are not often thought of as family pets, but in some cases they are treasured and profitable, Tim Unruh writes.

Not every creature is built for peak survival. While some animals have evolved to sprint, soar, or blend into their surroundings, others have developed unusual traits that seem to defy practicality.

HorseFactBook.com advises that horses and pigs don't make good companions, and that they should be separated by a fence.