10 Things You Didn't Know About Dogs

Dogs know when they're not getting a fair shake. A 2008 study published in the journal Proceedings of the National Academy of Sciences found that when dogs saw other dogs getting treats for a trick they'd been performing unrewarded, the unrewarded dogs became agitated, scratching themselves and avoiding the gaze of the rewarded dogs. They also stopped doing the trick much faster than if they were alone and not getting a reward.

The dogs' version of jealousy wasn't as sophisticated as a human's: The animals didn't seem to mind if other dogs got sausage while they just got bread, and they didn't care if another dog got food for nothing while they had to do tricks for a snack. But, the researchers wrote, the findings were good evidence that being green with envy isn't just a primate thing.


http://www.livescience.com/animals/10-dogs-facts-100917-1.html

I didn't need a scientific study to know alot of that, but there's new stuff there too. I didn't know Chihuahuas originated in the Middle East.

Cats and dogs display alot of the same behaviors. They know when you are ill or diseased because you smell different. Mine seem to know when I'm going to be leaving the house and when I'll be home. Maybe because of my routines, or maybe by the amount of daylight. Not 100% sure.