03/05/2012 08:42 BST | Updated 04/05/2012 03:31 BST

Bike-Guarding Dog And More - This Week's Top 10 Viral Videos

And so another week flies by, and another 100,000 funny videos are slung onto the internet - and it's our job here to dig through the mountain of web junk to uncover the genuinely sweet, the undeniably amusing and the truly giggleworthy gems inamongst it all.

This time around, we've got adorable dogs - hey, we like dogs! - the world's best grandparents (arguably), and Barack Obama telling jokes better than Billy Connolly (even more arguably).

So for all this and more, click play on the faithful hound video below and keep on clicking to see the rest of the past seven days' best video virals.