Our favorite #upwardfacingdog photos: More of your submissions so far

Our #upwardfacingdog competition ends today! Thanks to all of you who have shared your charming, adorable, and goofy pets with us! We’ve been overwhelmed by the response, and quite frankly, we never want it to stop—all of these doggy photos have had a fantastic effect on office morale. (And now we know why.)

But although you can keep the photos coming, today is the last day to enter your pup to win a (fake) Science cover and the chance at snagging a Science swag bag! Send your photos to sciphotos@aaas.org, or post them to @sciencemagazine on Instagram and Twitter using the tag #upwardfacingdog by the end of the day.

In the meantime, check out some of the most engaging, entertaining, and doggone delightful entries we’ve gotten so far!

For more on man's best friend, see Science's latest coverage of doggy science.