Author: ANDREA DIAZ, CNN

Visitors cut down protected Joshua trees during shutdown

There are two kinds of people in this world: Those who take it upon themselves to go to understaffed national parks to keep them clean during the government shutdown, and then those who set up illegal campsites and cut down Joshua trees in the national park of the same name.

How VetDogs trains service dogs like Sully

These puppers are cute and cuddly, and -- despite a recent crazy report questioning dogs' intelligence -- they're actually very smart. So smart, in fact, that they can perform a very long list of commands.