Some dogs don't mind sharing attention ... and some dogs, not so much. But do dogs actually have the ability to feel jealousy, or its cousin envy? Read more about some studies that look to answer that question at the link.
XD LOLZ SO TRUE! When I was just getting a donut at the HEB when I came back my dog scratch the sofa XD I WILL NEVER EVER BE MAD AT MY DOG NO MATTER WHAT HE DOES - more funny things: http://hotfunnystuff.com